Hi, I was on my 12m for one year, can go on a big wing, 20m lines in 7 knots, (not lower than that). Can hold it to 20 knots on a race foil and short lines. Decided to get a 15m. Tested it in 5 knots on a big wing. This is so much fun. Also , in 7 knots a prefer the 15m for some extra power to go up...