I live with physical disability, so my options are a bit limited. In theory a hip replacement might actually resolve that, but I don't know about working a trade with a joint replacement. I'm a competent carpenter, having learned from my father (my brother is one of the best I know, but got out of trades because the pay benefits were poor). I'd probably look at electrical or HVAC myself, but the thought of working summers in South Texas is also pretty daunting. Basically, there's no free lunch ;)