More help!!

how can you make water curve around objects or stay out...

i wanna add a boat to a map... (the SS.Gimpy I've got it as a prefab as well can you say upload)

BUT!!
I've made several water brushes to sit around the hull on top of each other. And, since they are touching...V-rad has no idea what the heck to do...it says it's done and i try to load the map and it fails, i click on it and it only exits the select map screen to the main menu.
HELP! oh and work is coming good on my other map as well

It's possible I think, with physboxes and the like, but it would lag the map wayyyyy too much, source doesn't have that much of an optimized physics engine IMO, not with water anyway!!