Two red lines one above pro v1 and one below

I mark mine with a ? because being a beginner I have no idea where my ball will go 50% of the time.

Just a simple blue dot next to the number, favorite color is blue, plus the guys I usually play with play whatever they can find because they don't like buying golf balls so it is quite easy for me to identify mine when I play with them.

i put the numbers 226 on mine 

I usually mark my initials anywhere on the ball - most of my friends play with Titleist balls too so it makes it much easier to figure out who's ball is who's.

always mark mine with my initials. couple of guys i golf with never mark there balls and always think the one they find is their ball!

I always use an orange sharpie to put a 3 leaf clover on each side 

I like to extend the putting alignment all the way around the ball. Makes it easier to align putts and see how they roll off the face.

I use a green sharpie. 3 dots next to the number in the form of a triangle for the JMJ.

i like to put 3 dots on each side. Two  around the number and then one over the titleist i try and use  on color for a few weeks then change it up . I play 3 or 4 rounds a week with the same guys and the know no matter the color i am using if it has 3 dots its mine .

I use a Navy Blue dot, over the 1st "i" in Titleist for the 2015 ProV1 and the 2nd  "i"  if it is last years ball.  Both sides.  But Always dot the "i" with Navy Blue sharpie. Hard to find navy blue, so distinguishes from regular blue sharpie.

2 black dots under the number and a line for putting

I mark mine with my initials on the blank side with a maroon sharpie. Thinking about just doing a custom ball next spring instead of writing the initials.

I place a dot right in between the L and the number of the ball. And I put a black or blue line on the target line of the ball.

Always put 3 pink dots in a triangle between "Titleist" and the number. Also put a single dot in the middle of "ProV1" and lastly put a small "A" beside the number for my wife's initial. 

4 small blue dots in diamond shape around Titleist and the number. Once a new ball comes out I try a new marking but seem to always come back to this. 

I use a red sharpie and mark a line thru both titleist and pro v x as well so that I can see it from all sides. Red means birdies. 

Green dot next to the number.

No mark. I just remember the number on the ProV1X I'm using. The other guys I play with just about every Thursday use a ProV1 or other brands

A single black dot right about the Titleist and in the middle!! No putter line. I use the arrows on the x to line up.

Three dots in a triangle pattern around the number on the ball. Two on top, one on the bottom. 

I put a blue dot on the number then i put the t blue as well

A blue line, that I use for lining up putts

I put 3 black dots above the 'Titleist' evenly spaced out and then 2 black dots under the ball number