Where to buy fishing tournament shirts?

Answer:

Try www.tournamentwear.com

There are also some very nice T-Shirts online at bgtees.co.uk. A T-Shirt example is linked below.

http://www.bgtees.co.uk/hooked-fishing/happy-fishing-over-2500-varieties-hooked-fishing-t-shirt-size-s-to-xxl-khaki-8771.html

I bought the one linked above and it is very good value for money.