Both of those sites look terrible, but your coach's is slightly worse. It's less busy and visually offensive than the other one, but it says things like "Online Shopping Made Easy!" and "Mega Deals!" which make it seem like a fake scam site. I think with such a niche product, word of mouth is key. Also, which comes up first when you google it- that's probably the most important.
What does his site offer that that other one doesn't? What does it offer that Sports Authority or hell, even Amazon, doesn't?