i looked here and http://www.trapperarne.com/ when i made mine, just played off the design they had going. I made 3, would have been easier to just order a couple from these guys i think and i was either in a crap spot or didn't do it right because i didn't catch very much.
I think the holes are too large for minnows. We used them for bream/crawfish traps. Most of the crawfish are still out in the fields around my neck of the woods. I will have to wait until the water goes down a little before I can start raking them.
I recently used the same type of wire and some 3/8 rebar and a 10' stick of conduit and made a crawfish rake. It's light and sturdy!
if the water is not to deep, then you can just use that wire flat; tie down a hunk of meat on the wire, set it in the water just before dark then come back in about 30 min. to an hour. crawdads should be all over the meat and wire mesh. lift out of water on to the bank, most of the crawdads will stay on the mesh.