No rules. Just hang. Can do a pull up. You can bend elbows or use one arm.
BUT
Our bar was quite slippery, which definitely lowered times. Nobody had chalk or tape like most gyms.
My max time on the bar nostr:nprofile1qqs27annlvyatx8tvvnje4lxc8gkzsp3eh7qsnzxpaw4fxlrxhw8vvqpp3mhxue69uhkyunz9e5k7qg4waehxw309ajkgetw9ehx7um5wghxcctwvsat7r62 hung on for 12 minutes was 4:30. I was hanging on one arm at times during that hang and so was he.
My max time on our cheap amazon bar was 1:45.
nostr:nprofile1qqspcjc3fr04lh3scqz4plffm6jfdjawptusaavuztru540us6p5vdgpp3mhxue69uhkyunz9e5k7qg4waehxw309ajkgetw9ehx7um5wghxcctwvstlu5gn is champ so far with I think a 3:10 hang. And nostr:nprofile1qqsy2ga7trfetvd3j65m3jptqw9k39wtq2mg85xz2w542p5dhg06e5qpzdmhxue69uhhvct4d36zu6tjd9ejuar0w3mpq9 was right behind just under 3 mins.
🍿