Slippery surface tricky ultimately, delicate drop shot lousy (5-4)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

RINK (slippery surface) + [trick]Y + DINK (drop shot); rinky-dink sounds to me as if it should mean something good, but according to Chambers it’s North American slang for “old-fashioned, trite, cheap”