skating

ROLLER SKATE:
To sign "skate," form your hands into "bent V" handshapes. Then put them in front of you, palms facing up.
Alternate moving them forward and back a couple times.
Memory tip: Think of the movement of a skater's feet.

That handshape looks like this:

Animation: "ROLLER SKATE"

To sign SKATE as in I-C-E "SKATE" form your hands into "X" handshapes. Then put them in front of you, palms facing up.
Alternate moving them forward and back a couple times.
Memory tip: Think of the movement of a skater's feet.

Here's a close-up of that handshape:

ROLLER BLADE:
As time goes on, I'm seeing this sign show up more and more. It will be interesting to see if it becomes standard.
Many people just stick with the traditional sign "SKATING" even when referring to "blading." I don't think my kids have ever even "seen" the old kind of roller skates with four wheels.

Animation: "ROLERBLADE"