I've been experimenting with different approaches and I found a 3/0 circle hook with mackerel strip or a couple of mussels strung under it on a hair rig (just like carp fishing) works great when float fishing up there.
As previously mentioned, don't blast for the horizon. Fish along the rock edges by casting just a few yards out along the cliff and try a sink and draw type retrieve when spinning or just watch your float carefully as you work it along the rock edge.
If you want to lug some bigger tackle with you then try a pair of 3/0 circle hooks or one at the top and a standard 4/0 Viking at the bottom with a ledgered mackerel bait.
Circle hooks are absolute killers for turning bites into hook-ups (they tend to work well sticking my fingers as well

) and using one on a hair rig is dead easy - unless I'm using worms as bait circle hooks are my mainstay. No need to tie fresh mussels onto a hair rig (unless you want to cast them a long way).
Give it a try - you might just be surprised
Although it's not strictly spinning you could try a small Eddystone (Eddy jelly sand eel lure) a few feet behind a small bullet weight, or no weight and a soft eel lure with a weighted head. Again, I've had good results up there bouncing them over the top of the kelp beds
Good luck - Dunstanburgh/Craster is one of my favourite locations for sea fishing
