The primaries on a medium size boat will most likely be sufficient to hoist
250# by the average size crew member. Say size 40 or even better size 44
selftailing.

However, it would be a mistake to abandon the use of a block and tackle if
the winch is smaller that this.

If anyone is in doubt, just rig up a halyard directly to a 200+ person on
deck and ask the wife to take it to the winch and grind away. I think you
will then agree that some additional purchase, if not required, would make
the job a lot easier..

It seems like some are afraid of the tangle mess often found in a stowed
block and tackle. There are proper ways to store this gear.


--
My opinion and experience. FWIW

Steve
s/v Good Intentions