Apologies Rolf, was just trying to pre-empt Wouter.

Thread is good and is something quite interesting and probably overlooked/assumed to be right when a boat is set up. Regularly sail on TPs and other raceboats (either as bow or spi/jib trim) and see how critical a stable pole and rig can be on an A-Sail. If the pole is not stable and is bouncing, it has a massive effect on the rest of the sail. Now, I know that this is a cat forum and we are talking about different boats, but the general concept of creating a stable luff is there. And with the kites going flatter (and those pix from Delta Lloyd are certainly looking flatter compared to a few years back), the luff stability is an issue. I think it is a take on moving in the right direction.