First attempt:

I think the front doesn't look to good and all the thing isn't looking very close to a real hydroplane, but it's fun to model in this way.
You could think of doing a cel-shade effect to your game, so that the models all have these black edges. Only if you'd like of course, but i think it looks pretty nice...

I think the front doesn't look to good and all the thing isn't looking very close to a real hydroplane, but it's fun to model in this way.
You could think of doing a cel-shade effect to your game, so that the models all have these black edges. Only if you'd like of course, but i think it looks pretty nice...