judgement call about his whole game, preflop stats aside
I mainly meant postflop tendencies, although I was referring to the 9% VPIP-PFR gap as well although the PFR stats aren't why I labeled him as weak/tight, and the only reason I think they're important to this hand is in establishing an initial range because I don't think he'll be isolating the fish who limped quite as wide as most TAGs with a tighter VPIP gap. I would argue that if you have a perfect sample, a 24/15 is likely to be a fairly different to much different player than a 24/18 for a wide number of reasons, but even though I think that discussion would be somewhat interesting, and I could probably write six paragraphs on why because I'm too wordy, I don't want to derail too badly, and I'd love some thoughts on the line I think I should have taken that I describe below.
I just looked at HEM, and I suppose more relevant information that I should have looked at and provided earlier is that over a 1.5k sample size, he isolates a limper when he's in the CO/BTN 17% of the time over 91 samples and he steals from the CO 23% of the time which means he tightens up significantly when there's a limper in the hand (unless he ran really bad over that sample of 91) which seems to me to be pretty strong evidence that he just shuts down whenever anyone else is involved in the pot without a strong hand which makes a fold, as played, a lot more clear cut than I previously thought which means this hand isn't really that interesting I guess. There are some other aspects of this table/player that made me choose choose call instead of 3bet, but I didn't include them in the OP because I was mainly looking for thoughts on turn and river play.
FWIW, I did fold in game, but I think a better line would have been to check behind the turn and try to get some value on the river because I'm only getting one street of value against worse anyways, and checking the turn might induce some light call downs or light leads on the river. Even though I have the top of my range here, I don't think I'm getting bluffed too often here, and there's not much on this board that's worse than my hand that isn't scared to put money in.
It also prevents me from being put in a tough situation if villain decides to checkraise or donkshove river, although I don't think villain's ever really doing that as a bluff, and I don't think he's ever doing it for value with worse; so it's not really a hard decision, it's just nobody likes to fold trips.
Mostly though, I don't think anything worse would put money in on the turn but wouldn't put money in on the river if the turn checked through; but I do think there are worse hands that won't put money in on the turn that might do so on the river, and I think that's where the margin is in this hand and where there's a chance to play this hand a little differently than I did which will net me a few extra big blinds this hand.