I recently put up a 10'x 15' net ($50) strung on a cable between two trees so that I can pull it/retract it to one when not using it so as to keep it out of sight. Nothing exciting. But I did build a way to reproduce the idea behind the SKLZ glide which allow some for a down and through swing minimizing the shock on the wrists and eliminating the false security of fat shots.
I am indeed surprised that it's legal to stand 30' away in the line of putt. How far does the rule apply to one's side, and therefore how far would proper etiquette mandate an opponent to stand? In other words, how far does the line of putt go behind the player?
Also, how far behind the hole? I know for the purpose of stepping on the grass behind the hole, 3' is probably adequate but how far can one be behind the hole on the line of putt? I don't like seeing anyone there either, and because I take multiple looks at the target (roughly the hole, but not necessarily), it's probably more impactful than standing behind the ball, at equivalent distance...
Personally, I think 30' is fine, maybe even 20 to 25' but don't move and don't say anything! If I notice the feet in my peripheral vision, I will be annoyed as well. As for the guy jumping in, I don't mind if it's done after my follow-through, not just the impact point.
A month is nothing. I stopped all golf stuff for about 5-6 months just because it was getting kind of boring.
At this point, I've been back at it for a couple months and enjoy much more than if I dragged on playing.
Do other things in parallel to golf. Golf is fun when you look forward to playing. It's not work!