Animation is always tricky and admittedly what I've proposed is only a partial solution that is best looked at as an idea that needs to be expanded upon but it might work until something better comes along; and it stimulates the conversation along these lines. It might be tricky, but if you could move the xyzs of the canoe and the bool canoe as a group without having to redo the boolean operation every time that would indeed be a timesaver. but the water needs to change too ... animation is one can of worms after another, eh?