"This years rink was built almost entirely by my 13yr old and 15yr old sons with some help from friends and relatives.  The rinks dimensions are 64' X 36'. The boards are 4'x8' knee walls built with 2"x4"'s which are 2' on center and 1/2" OSB. They lagged the panels together and attached a top rail made of 2"x6" boards. 

The liner is the plastic used for covering boats for the winter (I highly recommend this stuff, worth every penny. It is 7mil thick and pure white). They used duct tape for the center line and an American flag for center ice. I hired an electrician to install a metal halide lamp on the roof of the house so that they could play at night (I had no idea it would light up all my neighbors yards as well)."

Absolutely awesome job boys.  I can't imagine what you would do to improve this rink.  It is very impressive.  Thanks for sending in the pics.