Neep opinions on how to fix home made spike tooth

Looking for some suggestions, we have a very steep long drive that gets very icy even after being bladed. I have been bouncing around the idea of mounting a salt spreader to my gator but havent pulled the trigger on that yet. Anyway today I had a snow day from school so I went to my dads shop and made a spike tooth that I could pull behind my gator to bust up the ice and bring some gravel to the top. I used box tubing and angle to make the base and have to so I can stack cinder blocks on top for weight. However where I messed up was I used rebar for the spikes. Half way down my drive I realized that was a bad choice as they all bent. it was doing a good job before it bent. Any ideas of what I can weld onto it the will hold up and not bend? I was thinking a pice of angle that has v's cut into it. Any other Ideas?
 
Find some junk spike tooths and use the spikes. Rebar is what the carnival folks use to surprise and amaze the folks that their scrawny guy can bend it into a pretzel.
 
Use "highway" grade rebar (100 or 120), not the cheap cr^p you buy at the lumber yard.....
Not all rebar is crated equal, and not all can be bent by "carnival folks".....
 
Old harrow sections are pretty inexpensive, buy two identical sections and salvage one for spare teeth.
 

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