I was diving the rockets for nearly two years. I'm now diving a fin that I'm not yet allowed to talk about. Really. The manufacturer sent me these to test. I took em to Bonaire and this past weekend dove em in drysuit and doubles. They ain't goin back! Perform like my rockets or blades and are easy on the legs like splits. Can do all my kicks including back and helicopter turns. I wish I could give a full report. Issue with the rockets are they only come in two sizes. The original which says one size fits all- it does not. And the super which has a bigger foot pocket. IMO it won't fit anything bigger than a size 10 mens foot. They do work well if you can get em to fit.