Paint tray holder for extension ladder

There are a number of techniques I use to paint high spots such as a roller on a pole, a sprayer with an extension tip, a bucket hung from my extension ladder. Unfortunately, I have never been able to buy an "off the shelf " paint tray that fit on extension ladder.  So here is my DIY solution.

Materials:

Metal paint tray  (Gallon size works best)
6 feet of  light weight chain.  (I used jack chain)

Tools:
Drill
Pliers

Step 1 Drill holes in paint tray.

Drill small hole in each corner of the tray on deep end along the upper edge. ( you can also use a center punch or nail)