Bille,

The problem with outfitting a H16 main to the H20 is the foot length (that's why sail tubes started out 10 foot long wink )

Maybe the H17 (or TheMightyHobie18), again having to check the foot length for connection to the boom, and probably some modified attachment mechanism, like your reefed main halyard set-up, necessary.

Option B, find another 20 main for the lazy days (under 20knots) and have Chip Beck make you a "storm" main.

Option C, since Mojave is your lake, ditch the 20 and get a Tornado or H16 laugh

Thanks for your service to the country

John H16, H14