i mean, i don't think you look at these with any sort of "fundamentals" or strong strategies. you just need to decide how much you want to gamble.
you would be wise to not get too greedy, so the sooner you can get net free the better (plus some extra as profits). from there, the rest is just gravy and free money.
at a certain point even when net free though there is a time to just exit with your winnings. i don't have numbers in mind, i just go by feel or if i think it's running out of steam. on a couple of these i just keep 1k shares behind into perpetuity just in case it explodes later on down the line, i've already taken the profit i'm happy with.