I installed a nice fresh water flush set up in my last boat.I connected hoses to the block drain on both sides and ran them to a connector up top and had an easy time flushing while in the water.I now have TWIN merc alphas and am looking for an easier set up.I am considering tapping a T connector to the hose in front of the power steering cooler.I am not sure if the water would go the wrong way and just exit the outdrive. CC