New to this striping thing and my first roller filled with sand that I made was 2" pvc and too light. I upgraded to 3", which was much heavier, but still not that great of stripes. I had an extra piece of 3/4" horse stall mat that I had left over from my home gym install, so I bolted it on. Wow what an improvement! I'm not even sure I need the roller, but I'm sure it helps a little. Pics are in order of oldest (2" pvc) to today (3" with rubber flooring).
2" pvc filled with sand:


3" pvc filled with sand:


3" pvc filled with sand with added rubber mat:


2" pvc filled with sand:


3" pvc filled with sand:


3" pvc filled with sand with added rubber mat:

