A Halloween sail?

I have seen a couple of these black Solo sails at Frensham recently. The latest is Tim Deacon's which was out today winning the Helm-Of-the -Year race - but in zero wind. So I am not sure if it is a good sail or just that Tim drifts fast?

The label says Quantum but it is a sail designed by Bosham sailmaker Mike Lennon who is also known for Int Moth and Int Canoe sails. Mike used to make sails under his own Lennon sails brand but has now joined up with the worldwide Quantum Sails group.

I am not sure why they are black, but I expect someone will update me on the advantages soon! I noticed that the sail has little windows for each tell-tail - a bit unusual?

The sail seems to carry the power quite far up the sail - I think competitor sails are a little flatter in the top third?

I have not raced against Tim with this sail yet - I'll be interested so see how it goes in some wind. ⛵