To make it more interesting how about a mast has to be taken down from the top, in 3 sections, weaker at the top down to a sturdy base section, you have to work it down by sections, repairs would allow you to repair a section, maybe more than once, but you would never be able to spring 3 new masts with the magic mast beans you got from selling your family cow on the way to the market (jack). This would allow skill and time for both the de-master and the escaper..Obviously top masts would have to be a lot weaker as you don't want a 5 hour session knocking down 9 different sections to totally de mast, but with enough sections gone the job is easier enough to board. Just a thought.