Before you judge by mere weight, keep in mind that I played Pro-Football for 7 years and at that weight I ran a 4.78 second 40 yard dash. Endurance? Playing Arena Football, we had to play Offense and Defense. Being a first stringer, it wasn't uncommon for me to play EVERY snap of the football in a game. I'm sure your little walk of manhood wont be too tough for my fat butt to traverse.
BTW, we don't have any concrete slabs where I sail from, just beach or grass. Some pretty steep.
I see your point on the advice part. But I never said I expected everyone to do the same as me. When someone asks for opinions on this subject, should I just keep my experiences a secret? Enjoy your little 16 and I'll keep sailing my air craft carrier.