When you say NO practice, I assume you mean that your only time at the course is actually playing, without any concentrated effort on the range or putting green. From my experience, I really doubt that you can improve over where you are now by just playing every other week or so. Sure, some times you will hit it a little better than others, or a few more putts will drop, but overall your game will stay about the same.
I see it all the time. Guys who play a "reasonable" game, say 90-100, but don't spend any time trying to improve, will always be a 90-100 player. Just like a bowler who averages 150. Very little chance he will become a 200 bowler without some dedicated effort.
Yes, this. I have a handful of playing buddies who play with me once every week or two but never practice... They shoot 100-110 and never get any better.
Even those that are posting here saying they can shoot low scores without practicing, are for the most part saying they had to play and practice a lot to *get* to that level.
That's exactly what I'm saying. My first 3 seasons I played pretty much every chance I got and later on practiced a lot too. I did my time.