I am sure alot of you remember last year when I tore my back up and had to have surgery, I was throwing a castnet. I was actually over throwing it as I put a 20 foot extension on the rope and really was turning and whipping the net way out there. After my surgery I was carefull not to make that hard quick whipping turn that a long throw with a castnet requires..I just made short soft throws and was fine. Well 7 months from surgery I was thowing my net saturday, and yes I was stupid and added an extension rope to make long throws..I had no problem at all, I was happy. Untill I tried to get out of bed monday, I was in severe pain and it really scared me to death, I thought not again, not another back sugery right before fishing season!!! I went to see my doctor monday afternoon, he asked me what I was doing to hurt my back again, I said the same thing I was doing that hurt it the first time. I then described the motion it took to try and throw a castnet along way, he told me that quick turning motion with my back was probably harder on it than lifting a heavy object. And warned me never to pick up a net again!!!! I am better today, not pain free but I got a big scare! So be carefull you guys with bad backs, a castnet just might put it over the edge!