Thanks Slowman & Fritzkat you might have hit the nail on the head, I think what is happening as you paddle the SP and SF with quite a forward motion they really paddle into waves really easy. The thing I didn't like and would not give the time to the HF was the paddling I find when it's crowded I would see a wave which I would get with ease on the SP & SF and I would miss it on the HF as it always seemed I had to be in a perfect position to catch the wave. I will try and paddle it further back and hopefully that solves the problem as I love how the HF performs in 5ft+ especially a thruster where I ride the SF as a Quad only, it offers a good variety which keeps things interesting.