@Joeprunc and @itch2ski, you guys both sound like me and about the same age too. I do know my technique isn't very good but I get really sore and feel quite old as well.
I completely agree with Greyhind on his diet kick. I've noticed in the summer when I ski, wakeboard, mt bike, and standup jetski that my protein requirement is through the roof. If I don't binge on proteins and vegetables, I will typically ache 3-4 days after doing anything strenuous. Since I don't wait 3-4 days before doing something else, I usually ache all summer long. The problem is that a couple days of protein and vegetable binge doesn't fix the problem and eating healthier is a pain in the butt if you're always cooking for one. However, the diet is the ultimate fix and I can vouch for that. Protein shakes can help with that extra bit but won't solve the problem by themselves. Stretching before (not just after) does help with pulling muscles but my joints still hurt unless I eat right consistently. Drinking more water than you think you need helps also.
If you can eat right consistently, you're a better man that I am. I know it works but it's tough for me to buckle down indefinitely.