I see a lot of people drawing 1 with trips, I suppose to disguise the hand. You don't have much chance to make quads. Is this a good play? Don't see much point in patting, as it is unlikely you make a better hand fold.

i thought it was the totally standard play?

Disguise and balance. You balance out the times you draw 1 to draws and bluff missed.

Yes, it's quite standard, but I think it's actually way better to draw 2 sometimes (maybe 25%), and draw 1 most of the time, at least if you often draw 2 when you have just one pair - which is also a good thing to do in a lot of situations, but if you only ever draw 2 with one pair, your hand is mostly face up, which is the reason to sometimes do it with trips.

I tend to discard 1 for the following reasons:

1. It disguises the strength of my hand making it easier to get value from big two pair hands
2. It balances out my straight, flush and two pair draws
3. You have a much higher likelihood (4 outs once vs. 1 out twice) of improving to a hand that can beat the most common big draws (flushes and straights)

No. If you draw 2 and your first card misses, you'll still have 4 outs on the second card (or 3 if it's the same rank as one of the cards you discarded).

As Vempele said, your chance of improving is higher if you draw 2.

That's kinda easy to see. If you draw 1, you have 4 outs to a boat or quads. If you draw 2, well, after you draw the first card, you've either made quads (woohoo! ) or you're back to the same situation as when you draw 1: you have trips and a sidecard. So drawing two gives you that one extra shot at quads, and a very marginally higher chance to improve.

I usually draw one card so that it looks like I have two pair. Most players that catch two pair will call (or raise!) post draw and this is a good way to cash in. The only time I draw 2 is when I feel that my opponent also has trips, or when he stands pat. I will also draw 2 when Villain McKicker also draws two and is highly likely to have a kicker. He will call assuming that you have kept a kicker as well.

It puts your 1-draw range between 3322x and AAAxy (or quads) and makes it difficult for your opponent to put you on a hand.

Drawing 1 to quads/boat:

Hitting Boat: 3/47 = 0.06383
Hitting Quads: 1/47 = 0.0212766
Total: 4/47 = 0.0851064

Drawing 2 to quads/boat:

The total number of 2 card combos from 47 remaining cards is C(47,2) = 1081
Hitting Boat: (10*6 + 2*3)/1081 = 66/1081 = 0.061055
Hitting Quads: 46/1081 = 0.04255
Total: 112/1081 = 0.10361


I think the value of "deception" by drawing one is worth bricking the draw 1.85% more of the time.