The last time I checked I had 7 dozen in my locker. I usually keep 2 new sleeves and around 6 used balls in my bag. I also have a shag bag with around 6 dozen used pro v1's for practice.

TH

Nice!  I recently put together a shag bag with 3 dozen new prov1x practice balls. I thought about going more, but I figured they start to get in the way of each other on the practice green. You know, because my shots are all so close to the pin all the time... (no, not really, but hopefully soon)

I am old school. I usually play Pro V1x's that I fish out of the lake. I carry about a dozen balls that I have found or fished out of the lake in my bag. I play a ball until I loose it or until it gets scuffed up pretty good. I asked a question earlier about the life of a golf ball and the Titleist people said until you loose it. I did break down and buy some Syrixon balls because they are not as popular as the Pro V1's at my club. The Srxn and the ProV1x seem very similar in spin and distance. Our club uses ProV1 practice balls in the chipping area.

I have one sleeve of ProV1x's in my bag and a half dozen lightly used. I also carry a couple X-outs for water shots. I am getting better though, I haven't pulled those out yet this year, and I still haven't been wet...

I generally buy all my supplies during the winter months. I keep at least 2 full sleeves in my bag at all times.  I might have to purchase a new glove if one happens to not last as long as expected and I haven't put the next in line in the bag yet.  I play a new ball for every Club Event and each day of the weekend for my normal group.  I use all the used ones for mid week play, practice, or next in line for a lost ball, which I try to keep to a minimum. 

I usually have about one dozen Pro V1x, number 5's only, in my bag.  With about 4 dozen back in the locker.  Shag bag is full of previously used Pro V1's.  They hold up well during the round only will use about two, barring any lost balls / penalty shots.

Jason, I am the same as you except I have a different number on the balls.  My shag bag is perfect for non-gamer ProV1's.

I usually have around 4-5 dozen in my locker.  Keep 2 fresh sleeves in my bag usually.  I'm a little OCD with the cover condition.  If there is a scuff or wedge groove mark on the ball, in the shag bag it goes.  Shag bag is always full of Pro V1x's.

Sean

I usually get balls 12 dozen at a time. I order when I get down to 2 dozen. I keep 2 new sleeves and around 6-8 used balls in the bag and I have two full shag bags of used ProV1x balls for short game practice.

Always have two sleeves of ProV1X's #13.  Then usually no more than 4 loose ProV1X's.  I put all used balls in the shag bag and do not play any other type of ball.

TT

I get 8 dozens balls each year and usually works out well.  I begin each round with exactly 13 balls in my bag all marked with my personal design.  Used balls are placed in a shag back for short game practice and replaced with new ones to get back to the original 13.  

Hahaha! WOW! 12 dozen at a time...

Seeing as you are a certified fitter and PGA professional, I'm assuming ordering that many at a time does not hurt your wallet as much as it would hurt mine!

Oh the envy...

I always keep 8 in my bag.  I order 4 dozen prov1x's at a time, and can never let my home inventory get below 1dozen.  Glad to hear im not the only one ocd here. Crazy loves company,

Generally keep 5 dozen around and three sleeves in the bag, one of which I use for putting practice!

I play ProV1x's and NXT Tour's. I keep 2 sleeves of Pro V1x's in the Bag along with 1/2 dozen loose balls, 3 each of the Pro V1x and NXT Tour balls. 

In my Golf locker [i.e. closet under the stairs where I store my Bag etc] I have 2 1/2 dozen Pro V1's and 1 Dozen NXT Tours

I have 10 dozen at home. I buy them when I see a good deal.

I keep 2 or 3 dozen in my bag at all times plus about a dozen lightly used also. I have 125 Titleist practice balls in my shag bag. When I am playing and find a ball and it is not a ProV1 or ProV1x, I give them away to someone in my group or if I am playing all by myself, I will give them to someone at the clubhouse when I am done playing.

David K

I keep a box of Pro V1s in the bag......also have a sleeve of Pro V1X in there right now....might be looking for a little less driver spin.

That is my inventory - when I run low, I stop by the pro shop and pick up some more ProV1s.

I keep two sleeves in bag & about three dozen at home in my "pro shop"........good thing is that I am losing less!

I give found balls or those I receive at outings to junior golfers in training!............same with old clubs!