These photos and accompanying notes might help you obtain the best images of your boat.

On slightly choppy waters, quite a number of images had to be taken to obtain this one with the least wash and spray beside the boat so that the signwriting was clearly visible. The boat had to be at the right speed as well to obtain the near ideal running angle.
(Goldsbrough 'Mystere' in 'Wood On Water Edition II')
Typically the best angle for running shots is from off the bow quarter as shown in this photo; perhaps even from a bit further ahead of the boat. This image was intended to show the cruiser toward its top speed and to illustrate the bow wave and the pattern of the wash alongside the hull.
​(Halvorsen 'Constellation' in 'Wood On Water Edition II')
This is a useful shot as it shows the layout of the dash panel, wheel and screen plus some of the foredeck as well as some of the construction detail of the hull with stringers, frames and planking. It took some care to get the sun shining on the hull details.
​(Everingham 'Binky II' in 'Wood On Water')

Ideally include images of your boat with some showing it facing/running to the right and some to the left. Photos with the boat just sitting still can be good too. Note the 'uncluttered' background in this image - nothing to distract from the boat itself.
(Halvorsen 'Constellation' in 'Wood On Water Edition II')
Photos of the transom showing the hardware and other details are important. This image has the added appeal of a reflection in the water. For trailer boats, transom shots out of the water can show to better effect details of the prop and rudder plus cav plates or trim tabs and similar.
(Lewis Bros 'Still Cruz'n' in 'Wood On Water')
A shot from straight ahead of the boat can give quite an exciting image that shows to good effect the shape and style of the bow area  - and its construction too if wood. Make sure the crew are smiling and happy though! Always play it safe when running two boats close together.
(Hammond 'Miss Australia' in 'Wood On Water')
For larger cruisers, a good photo of the main saloon is critical. Frame the shot to include as much detail as possible. You will need a wide angle lens to fit in everything. Take photos of the other cabins, the galley and cockpit too. As always, take a number of shots then choose the best.
(Halvorsen 'Palmyra' in 'Wood On Water Edition II')
This is a great shot for several reasons. It shows the transom in an action way, the wood details of the aft deck are highlighted, the overall lines of the boat can be appreciated and the girl waving adds a delightful personal touch. It was taken from the foredeck of the camera boat which was a bit larger boat and so gave an advantageous down-angle for the camera. A long lens brought the boat closer than it actually was. Getting good action transom shots is not always possible as many boats kick up a wash/spray pattern that obscures the transom. Typically the boat has to be running quite fast to have a chance of getting a clear shot. Make sure the skippers of both  the camera and target boats are happy to run together this way, especially at speed.
(Kencraft 'Mystress' in 'Wood On Water')
If it's possible to find a spot from which you can take an overvew shot of the boat, do so! It's more difficult for bigger boats, but sometimes a bridge or high jetty can be found nearby. An angle like this gives a great view of the boat's lnes and, especially for wood boats, really brings out the craftsmanship of the construction and the choice of contrasting timbers. 
(Lewis Bros 'Still Cruz'n' in 'Wood On Water')
Another example of an overhead shot with the boat at an angle rather than from directly ahead (as in the image right/above) This angle better shows the layout of the cockpits, but either shot is good. 
(Hammond 'Miss Australia' in 'Wood On Water')
It is very advantageous to take some photos of the usual crew and/or guests as they enjoy the boat. Whether having a meal or a drink with a snack, or just lazing around, or more action-oriented images of skiers or wakeboarders and so on, having people-photos shows the lifestyle the boat makes possible - and that's really what it's all about!
(Halvorsen 'Palmyra' in 'Wood on Water - Volume II')
One of my most favourite images of all time, this shot of youngsters enjoying an up-front ride in a Childsplay Comanche bowrider shows the boat to good advantage but, even better, it shows the fun of family boating. People and boats - the ultimate life style!
(Childsplay Comache 'High Noon' in 'Aussie Skiboats')
This is a good example of an interior shot of a runabout or skiboat or similar. It displays the dash and front seating arrangement and how the designer has blended the interior into the foredeck and overall lines.
(Force F21 Outboard in 'Aussie Skiboats')
Combining a shot like this of the back of a runabout/similar with a shot like that on the left gives a clear picture of the whole interior. Closer-up framed images of the dash panel and controls can be added as well.
(Eliminator 215 Skier in 'Aussie Skiboats')
If the drivers of both the camera and target boats are experienced enough and happy enough to do so, asking the target boat driver to 'goose' the throttle to punch his boat up and out of the water can result in exciting action shots like this. It also shows the important under-side design of the boat to advantage.
(Everingham 18-foot Vee-hull Raceboat 'Seabreeze' in 'Aussie Skiboats')
Any boat with a good-looking engine should have that featured in an image. For a raceboat, a photo like this shows not only the engine but how/where it's mounted in the boat, and this shot shows the transmission as well.
(Everingham 18-foot Vee-hull Raceboat 'Seabreeze' in 'Aussie Skiboats')
A photo of the boat on its trailer can be useful - especially if it can be taken against an uncluttered background. This shot taken near the boat ramp at Windsor with a clear blue sky background is ideal. Some trailers are works of art in their own right, and truly deserve a good photo.
(Connelly 2100 Ski-racer 'Humble' in  'Aussie Skiboats')