In reply to a cheap waterresisting go to the dollar store and get urself a pack of ballons,not the cheepo chincee ones the thick party ballons,take these ballons and fenagle ur battery holder,servos and receiver inside them,u want the wires to come out of the baloons opening put a lil vaseline on the wire and zip tye sum zipties there,next u want to stretch the baloons a lil thin where the servo horns mount don't wory they will fit back on without trouble ,keep your filter oiled well when running in wet conditions it will help shed water,one can get crafty with an old rc body and make a baffle to block ur filter from the bulk of the splashes,I have dun this for many years and never ruined my electronics or engines also after runnin in the drink don't be afraid to use some extra aro,I live in new York and run my rcs all year I use an old wool sock on my head to keep the temps up and steady.