I have the Tomcat 42 on my IS 111 and love it. A thousand times better than the Drake 38 and 44 that came with the board. Great power and control and doesn't spin out. If you do push hard enough to spin it out, it comes right back without any effort. It has more foil than the Drake and may be a bit slower, but I use it mostly for free sailing and not racing. I have been using it in the 12 to 22 knot range with my 8.4, 7.6 and 6.6.