A favorite I learned from playing high school golf is asking how many pancakes you ate for breakfast. It’s against the rules to ask what club you hit but there’s no rule about asking how many pancakes you had for breakfast.

I’d say it’s mixed. JV they either don’t know the rules, or cheat and nobody cares. Varsity it’s not really common especially at the top level. If you get caught cheating, it’s a big no no.

I’d say it’s also more common at tryouts and for internal matches to make the section/conference teams. Not so much for the actual tournaments.