I use a garden hose tee with a cap. It is in the hose between the through-hull and the strainer. Barb x barb x 3/4 hose. A 4-foot long hose is kept coiled under the intake. Just takes a few seconds to uncap the Tee and screw on the hose. It's the $1 solution - works about as well as the $50 solution. Takes up less room, too.
Theoretically, this Tee also allows one to use the engine as a back-up bilge pump, if that ever became necessary.
Looks like this one, but has a cap.
