I am in the middle of dilemma and need some opinions here.<br />I have a 26' Formula that is equipped with a manual head. There is no holding tank; it is straight through waste hose. I was thinking taking off the whole thing and replacing with USCG approved porta potti. I think it would be better then adding a holding tank, pump and the rest of stuff I don't even know. What would be a good porta patti? <br />Thank you,<br />Lenny