You need a leash for the ski that doesn't have a brake. In fact, you want a leash, you don't want to chase a runaway ski. Also, the pad the you step on to disengage the brakes when you put your ski on, thats a heel support as well as a part of the brake. You might find the ski a little looser on your foot and a little less controlled. Just my 2 cents though.I know people who ride without brakes all the time.