If they is just passin thru and headin on up the lake they should give you as much room as possible IMO. No need slowin down since like others said.....fast boats leave smaller wakes.
Now on the other hand when somebody is motorin out of a cove real slow like they should observe "NO WAKE" rules. I had an ole boy motor by me in a little 16' boat last spring throwin a big wake cause he was runnin nice and slow. Dont think he meant no harm since he waved and smiled nicely....but that ole fart bout pitched my partner outta my 20' aluminum boat.
I generally dont fire up my big motor when leavin coves that way I dont spook the fish for others....but thats me. Im a nice guy!:p
Progressive Marine Insurance SUCKS!. If you hit a submerged object they will try to prove manufacturers defect....stay away from them.