I recently bought a fender P bass. It's a real beauty, 1978, craftsmanship is pretty sweet, tone is ridiculous... It's the first professional bass I've ever bought, but one thing that kind of slipped by is the heavy weight. I mostly played it in the store sitting, but I have been practicing my set for my rock band standing and have been realizing it's kind of a beast! My shoulder starts getting sore within about 20 minutes of playing standing up... any suggestions? Some comfy strap? I'm hoping I can find a way to hold on to this baby without selling it for a lighter axe.