Hi,<br /> I've been looking at used boats 27' 1985ish and a lot of them have twin engines. All that goes thru my head is....Lets see....2 engines, thats 2 manifolds & risers to change, thats 2 outdrives to fix, thats 2 of EVERYTHING.<br /><br />Question: Do you have to have both engines on to drive the boat? If on engine breaks, can I just use the one?<br /><br />Thanks,<br />Lou