When I guided on the Skagit years ago we always would, after no action on a couple good drifts run our boats right up the middle of the hole,,,,,,it would turn on ANY fish laying quietly and the BITE was on. Have done this MANY times , but we'd NEVER pull this when it effected shore fisherman.
Now as far as ROCKING a hole its highly illegal south of the border,,,,,,,,but DAM it also works too. You are not allowed , as its written " to molest fish with thrown or a protruding object" what ever that means.
Most jet owners are highly respectfun of everyone but as always a FEW make us All look bad and that burns my butt. Now a V8 inboard is BS in the Chill/Vedd.