Been thinking of a good trials related fitness programme. Thinking press-ups, chins, bodyweight squats and cardio (hill running and box jumps should be good for explosive power)... odd weights every now and then thrown in, nothing too heavy. As for the protein question, if you're after a weight gainer prolabs n-large is good. Have tried most stuff out there, and that seems to digest easiest, and doesnt taste too bad either!