In reply to mark s:
Set up a system board, you can tag holds on it with coloured tape if you want to set up problems as well, so have the best of both worlds. However the system board will address imbalances which never get solved by just climbing.
25 to 30 degrees , 18 mm ply. I don’t bother drilling and setting t. nuts anymore as I just use screw ons. You want the training rather than sore skin to be the limiting factor, so wooden holds. Beastmaker, Session, Crusher are all good. Hardwoodholds have very good sets and their small dome footholds are excellent. Just as important is decent lighting and heating. It’s important to want to go in there!
if you do end up using plastic holds, then Euroholds and Beacon are good sources at reasonable prices
paul