I recently made the transition from an EFT to a Thunderbolt. After less than 5 minutes the boat felt as stable as the EFT. However, I was going a whole lot faster. Kudos to Doug Bushnell. If there is a better boat builder, I have not found one, and I have been paddling since 1984. I do not know of any boat that has the speed and rough water capability of his boats. Try one and see.