I tested a boat last year that had one on it. It works as it should. In the case of that particular boat, I didn't care for it as the pump is inside the boat. The motor well on that boat was narrower than most (floatation on both sides) and with the pump, fuel tank, batteries it was bad tight to get to the drain plug. In a case like that I personally think that a CMC would be a better option since that unit is 100% self-contained with nothing but wires and relay inside the boat. If you decide to go that direction, throw the CMC relays away and put a winch contactor in it's place. The contactor lasts a LOT longer, frees up space (less wiring) and makes a cleaner install. Some guys say that it also makes the T&T unit work slightly faster. Easy to do if you have some wiring experience. Don't cut the 2 pin plug off of the CMC actuator or the warranty will be void. Cut the plug off of the wire harness end only, not the actuator end.