I LOVE this recovery sail. I'd cheerfully buy or make one over the Lifesling any day. All it needs is an optional reduction block and tackle for the less-upper-bodily-endowed.
The winch would be enough for some people, but for others, a B 'n T would be better.
Consider how much better it would be for an injured MOB vs. being hoisted up by a sling.
S/V Old Shoes
1973 Pearson 30 #255