I am with the others.
I pick up dockwalkers, a couple of folks I have met here on CF and lots of friends of friends for daysails - the more the merrier if space on board. Occasional sailors like this are not expected to contribute anything. In fact I usually provide the beer
the first time. I consider it promoting the sport and meeting people. If they ask what to bring I will tell them but not expected.
For those with kismet and come back occasionally, they get to bring beer
Those that integrate into regular crew eventually end up helping out on the boat maintenance
. Scrubbing decks, interiors and toilets. Particularly not disapperaing at haulout time - many hands are useful for scrubbing, cleaning
, polishing, loading and unloading gear
and just moral support. If they have mechanical apptitude they get promoted to mechanics mate... It is not an insignificant amount of time to invest teaching someone to do real maintenance.
If one is intelligent, interested, does some self study and at least offers to help, they are more likely to get invited back. I had one guy who would ping me every Thursday, and only on Thursday. "I am free this weekend, are we sailing?" Sort of presumtuous, especially as I wouldn't hear from him between his "offers" to help me sail. He then repeatedly would bring glass bottles of beer in styrofoam coolers after many reminders that the beer of choice on board is Tiger Cans. The flick off occured when someone accidentally kicked and busted his cooler and he wanted to be made whole for it. Bye, bye...
There are probably two crew over the last 6 years I would let take my boat out solo. There are plenty of other skippers (owners) i would trust before most crew.
It's not a crazy idea you have but you may have to work yourself up the ladder.