[willy]

Rap's comments are why I don't use the deadman. If I'm alone on the boat and it gets a little rough I use it, in other words seldom. If someone else is in the boat they will have a MOB situation and trying to keep an eye on the MOB while gaining control of the boat and dealing with sea conditions. Obviously easier if three or more on board but you still don't want to have to play around with a deadman key (spare) and getting the boat restarted. If the conditions make that tough I believe you have just put others in jeopardy and reduced your chances of survival especially if you got hurt going overboard which is a common situation.
When traveling solo is the only time in my opinion.