Here is the one I use as I took the number right off the handle. It's telescopic so you can adjust the length if you want. Looks to be the same as the white one you posted or close to it. When a ray goes into the net the barb plays no roll in getting stuck as the tail is usually pushed up and the ray can't move it or at least none of my adults have put up any fuss while in the net.
http://www.cabelas.ca/product/14087/lucky-strike-r25t46-rubber-telescopic-net
http://www.cabelas.ca/product/14087/lucky-strike-r25t46-rubber-telescopic-net