Has anyone used the Promar Collapsible fish trap, TR-101?

http://www.promarnets.com/promar/products.aspx?cat=7&Item=61

We need to remove tons of small bluegill out of the pond at our gun club.

With a quick search of fish traps I found this one for $14.99, $5 shipping or free shipping on orders over $39.

(vendor info available on request, don't want to promote them here).

So for $45 we could have 3 of them.

I can't find info on the opening size, not sure if it would be too large for small bluegill (less than 6" would be the target).

Seems like a great price if it will work (the club is cheap, so they will like the price)

Actually given the environment, cheap gear that will only last a season or two is preferred over expensive gear that would last because even good gear would probably get destroyed, lost or disappear.

Matt