Over the last 10 years we have take over 200 people sailing, 12 were Sea Scouts and we have taken crew on multiple off-shore trips. One lady has sailed in 7 countries and two male crew have sailed over 4,000 nm including Puerto Rico to Bermuda to Canada and Miami to St Thomas, one of them transited the Panama Canal with us recently. Another is about to do a Pacific crossing with us.
The biggest problem with crew is that they fail to realize that there is a lot of boat work/yard work to go with the sailing part. One 27-yr-old crew quit when we went into the yard to make rigging repairs before an off-shore trip and he was asked to do as much work per day as my 60-yr-old wife.
Another quit after a hard 7 day off-shore passage and he discovered he was nowhere as tough as my wife.
The lady who sailed in 7 countries, US, Bahamas, England, France, Trinidad, Grenada and Virgin Isles earned those trips by turning up spontaneously one day to help when she discovered I had 8 hours of engine work to do. She and her husband know that they can join the boat anywhere in the world and sail for a few weeks as welcome guests.
My best advice is to take US Sailing courses at a local club. My own club Coconut Grove Sailing Club
in Miami provides lessons up to Bare Boat Cruising and rents boats to successful candidates from sunfish to a Beneteau 30 at 50% of commercial rates . Once the club members realize that you are a contributor then crewing opportunities abound. ASA courses are technically equivalent but taking lessons at a US Sailing affiliated club potentially carries the benefit of crewing for club members. CGSC has a yearly trip to the Bahamas on which new members can crew.
Sailing is lots of fun but it is not a game and you should learn properly. We know far more scared wives than competent men.
Good luck Phil & Nell