While I do not play the guitar, I am a drummer and I can totally understand what you are saying. Somedays I sit down to play and I can't seem to get in the groove, my brain is moving faster that my hands and feet will. Then on other days, it's like I have sticks for hands and pedals for feet. Everything just flows right out. My bow is the same way. I pick it up and shoot, and everything is just perfect. The arrow flies straight and true and does its busniess.
I also have been playing a while. I started when I was about 10 and I just jumped over the quarter century mark. Hey, mayber we aught to start a HuntingNet band
. Practice might be a little difficult though HUmmmmmm