In reply to JRT:
I have a crusher matrix fingerboard which is very similar to a beastmaker. I have been using it once or twice a week depending on whether i can be bothered for about six weeks. After mildly injuring myself on my first session trying maximal strength exercises I have only been doing more power endurance-style exercises on it with both hands on. Besides this I go to the wall for routes or bouldering once a week. I think the difference the board has made in six weeks has been noticeable indoors. I have gone from always struggling on 6c route indoors to doing my first 7a (well after my first 7a outdoors!). I don't know yet whether it will have helped improved outdoor climbing, which is more important to me, but as power endurance is on of my biggest limiting factors I hope it will when spring comes.
By the way, the reason I got the board was from reading 9 out of 10 climbers, which gave me a very clear message to train more. But Dave McLeod particularly stressed the point that to get better at climbing, you need to climb more. I took second best by choosing to only train once a week and supplementing it with a board with no foot or body movement. However, I'd have thought that weights, pull-up bars, etc will have only marginal gains unless there is a specific reason like injury that needs sorting.
Crusher holds make a screwless door frame mounting.
Hoe this may help make some decisions,
Cake