I bought a used V-10 Ultra by Epic. I'm 5.7" 30" inseam and 172lbs. Since I'm new to the sport and not swimming even though the boat is twitchy. Im paddling a bit over 7mph in most condtitions. If a power boat comes by, I position myself to take the waves on the side, and I sprint. (Is that called side beam? They need a terminology section! for new guys) I sprint to cause myself to be unstable.( to improve!) All seems OK but this guy says, "You'll be even happier in another boat that fits better for my size. So, what is just as fast and more stable for me? He also said the V 10 L would have been better. Also, Anyone have a comment about Stellar SES for short guys like me. Thanks