The sign for "rollerblading" uses "flat hands" to represent the forward and back movement of your feet and the roller-blade wheels. Hold your hands out in front of you with the tips of your fingers pointing forward. I start with my dominant hand forward (but I don't think which hand you start with is really and issue). Then I pull (glide?) my dominant hand back at the same time as I I glide my non-dominant hand forward. Then I pull my non-dominant hand back as I move my dominant hand forward and that's it. Basically a "one" "two" movement. This is the same movement that is used for signs like "skating" or "ice-skating."
ROLLERBLADE (or "rollerblading")
See: ICE-SKATE
See: "SKATING"
Notes: