Seconding the comment that ff parties are where you go for quantity, and a great way to meet new guys for future play at parties or elsewhere. For documentation, I keep a folded strip of paper and a pen in my sock, and log the name, social handle or other contact info if they’re new to me, and what we did (fist, fuck, oral, jack, make out, etc.). I then transfer that to a simple list in the notes app in my phone, a sample of which might look as follows:
1/3 Manhole party: Nick F OBC Carl F JB O Julio MO O F Fu/Br…
Abbreviate as you like. This tells me Nick I fisted and I gave oral (OB = oral bottom) to completion. Carl I fisted and jacked and he sucked me. Julio we made out, he sucked me, I fisted him, and I fucked and bred him.
I put an asterisk next to the name if they’re new to me.
I also had business cards printed up with my social handles and contact info. If there’s a guy I want to see again, I show it to him and slip it in his sock. That works well since most guys at the parties don’t carry anything to write with.