Air injection has been under extensive research on airplane wings; in search of various benefits.

Trip turbulators like your adhesive strip have found application as far as the suits that speed skaters use on the 400 meter icy oval.

Neither of these idea's is very young. I personally learned about them back in the earlier 90's.

Personally, I do not see the benefits of a higher stall angle on a racing sailboat. A good sailor, that you have to be to win a race anyway, is already capable of keeping the mainsail out of being stalled.

Based on what I read so far with respect to sails, none of them experience fully laminair boundery layers along the full length of the sails anyway. It is my initial expectation that going for a full turbulant boundery layer along the cord of sail will not lead to significantly large benefits. It may make poorly skilled sailors better by having them stall the sail less but may not do much at all for skilled sailors.

Mind you the guys are testing the humpback whale fin for windturbines where indeed the proces of stalling a portion of the wing can be very serious. If is often associate with large and rapidly changing force changes at the root of the blades and the drive train in the hub of the windturbine. The turbines are getting so large that these effects can seriously damage the windturbine or its blades. So here a very large stall angle is not an efficiently improving principle per se but rather an improvement in dependability - low maintaince requirement.

Still, very interesting research. I'm awaiting their first official paper. Wouldn't be the first time where scientists promise to turn lead into cold and where their officially peer reviewed paper falls "slightly short" of that.

Wouter