I've had a 15 year lay off before, It's like riding a bike and the new equipment makes it even easier. The biggest difference will be that your legs give out much quicker. Day one you will be just getting into the grove and the feel of the new equip and then the thighs will begin to burn. It takes me about three days into a season, with days off in between, to be able to get a whole day in without having to slow down or just start drinking at the lodge, which is still a win in my book.