I'm in a similar situation. Although not as athletic, I would love to have a more physically demanding job. Somewhat wishing I had made a more vocational career choice such as plumber or electrician. I have an interest in both and have done a significant amount on my own, but they both require training and apprenticeship to be officially certified in my state. Unfortunately it's a little late in life to make a career…
Or try what I'm about to try next week (once my solor pack comes in), hike out with a kickass beach/lawn chair (cupholder a must, also recommend the ones that have a leg rest built in so you can put your feet up) and just setup somewhere... Of course the pre-requisite would be a good tethering situation (3g or better - edge is a bit rough)