On a large cat maybe a jetski tied to the hull
if you had an engine
go out would be handy.
As others have pointed out, most sailors and power boat
cruisers flinch at the idea of a PWC
ripping through the anchorage. It seems the larger number of PWC
riders, the same for snow mobiles, tend to not think of the folks around them. I'm not saying they are all bad but it only takes a few to spoil the image. Certain ocean beaches off the west coast
have banned them due to the swimming hazard and they are totally illegal in the San Juan Islands
(the exception being if you are passing through none stop).