Thanks for the responses. Sorry Howard. I misrepresented the message I read from Bill Riker in March 2001, which read: "Howard is the one who suggested dual head sails for downwind sailing." I thought the guy who sailed an M-15 to Hawaii had twin foresails, but I can not find the article about that trip. The issue of excessive sag is a valid one. There seems to be two options available: 1) use some sort of tensioning device - which I think racing boats have, or 2) have the second sail as a higher wind backup just in case a storm comes up. For me it would likely be a thunder storm. Just keep floating for a half hour or so and the sun will pop out again. The thing that strikes me about bigger foresails is that I may not have enough water to enjoy one. Are you folks setting the big sail and staying on a course for a long time? Does anyone on a small lake use a genoa/spinnaker/drifter/150+? Steve R. M-15 #119 Lexington, KY