In reply to pasbury:
I recently built a board in my garage, finished Igor (yes, sadly I gave it a name) a month ago.
7 feet isnt a great deal of height but you can probably use the garage width nicely and have a couple of different angles. I'd probably do a 40 degree bit and then something easier down near 30/35. Making the climbing harder or easier is quite simple in many respects... tiny holds make it harder, jugs easier. Add a roof if you can and jobs a good un.
The best thing I've found since building it, is that its actually good for training, it is good fun BUT its for training. It isnt like climbing outside or even in the local climbing wall, its for training and having fun. So you can please yourself, reset, have fun AND train hard if thats your thing.
Post edited at 15:23