I used to actually dream about seeing the words Leaping Lizzy on Widescan after doing 4-8 hour stints of camping back in the day.

I would say though, over the course of a few years, maybe between 05-08 i used to camp Eastern Shadow in Fe' Yin for the e-Bow and only fought him three times...

And with Argus, used to camp the hell outta him and only ever saw it defeated once in chat log after falling asleep.
(Actually got to fight him though, returning for 2 months after 3 years out, in 2011, and got it to drop Peacock Amulet on first day of reactivation, lol.)