In reply to Tigger:
I've been in that boat and I have to say I find shunting grit monumentally unrewarding. The routes usually just have one or two hard moves, often with rests, so given that you have to faff with the ropes before finding out whether the moves are the right level of difficulty or not, it can be a total waste of time. If it's hard moves on grit you want, go bouldering, surely?
Limestone is better suited to shunting, being steep and pumpy. The classic easy-to-toprope E4 is
Cabbage Crack (E4 6a), about 7a. For stamina, laps on
Wee Doris (E4 5c), about 6b+/c. Stoney is in general quite a good place for shunting IMO, so long as you don't mind climbing in a dump and the routes being shite.
Millstone is a good exception to the pointlessness of top roping grit.
The Rack (E5 6a) is a good fingery route - about 6c+ but there must be lots more there that are reasonably long and pumpy.
I haven't used my shunt in ages. If I want to go climbing on my todd and don't fancy bouldering, I just go somewhere with a good pumpy traverse.
Post edited at 23:11