Nat,
You will most likely need a hanger for the spit (on left wall looking downstream). You can also back up to a small tree a little way further up in the stream bed. Climb is only one move but, as you say, is awkward for people with short legs (myself included). Secret is to get as high as possible before fully committing yourself. Best to be safe as rock can be damp and slippy.
If you go there, take a look at Town Drain (entrance in left bank going downstream) as well. A far nicer (and more interesting) cave than many people imagine. Best avoided in wet weather tho'!