On the foot trimming point, I do the ewes at lambing and tupping, otherwise they don't get touched unless any go lame. The lambs are done at shearing, then again in the autumn. It works for me and I am blessed with very few lame sheep.
Waterhouse - yes you are in a bit of a wilderness area! There are not too many flocks in Dorset around me, so I have to travel to buy any new rams as those locally are bred from rams i've hired out! I used to go to the game fair at Redbourn to show my ferrets, I remember it was quite a trek.