I like the idea of a comp sailing seminar. Next one is in April, see www.SailingSeminars.com

For spray jackets, you can't beat the Gill Pro Sail
It actually is breathable, and waterproof. My prior jackets were breathable, but sucked water in.
https://store.catsailor.com/pc/viewPrd.asp?idproduct=26730&idcategory=0
Rick