it seems like you are looking to make a +ev situation in your mind out of one which is pretty marginal if not just altogether spewy. i do it quite often too, if there's a real fish at a table and everyone else is getting a piece. he may well be super tilted, but tilted people can still get dealt pocket pairs or A9 or whatever. he may have some air in his range but i'm thinking it's not going to be there near enough for this to be +ev.