In reply to alan moore:
It depends what route you're heading for, for Primate and Hysterisis the scramble down is probably best, although you have to be careful to pick the right line to scramble down, I didn't find it an obvious route.
For Mousetrap, you can get across the zawn except at high tide or rough seas.
The ab into the zawn is quite straight forward, a 60m ab plus a bit of a scramble or 80m to the bottom of the zawn and you can access Mousetrap at any state of tide and quite rough seas.