I'm not trying to frag on the towbar, but I've got TOO much invested in my tow rig and M1009 for a homemade bar. If it was made from 2x3 .125 wall tubing maybe I would go with it, maybe, but would have to have a much stronger attachment point that cut down shackles.
That angle iron would crinkle if you had an emergency stop and the Blazer was moving at anything more than 20 mph. I guarentee you would be explaining to the DOT boys about your towbar and possibly expalining to your insurance man about the HUGE divot in the rear end of your tow vehicle, if you didn't just get shoved into whatever it was that you were stopping for.
I am ANAL about safety in EVERYTHING I do!!
I will always be that way after seeing way too many people taking unnecessary chances and ending up injured...
I'm looking for a medium towbar for my blazer but until I find one, I will just put on my trailer and go... It's a hassle, have to change out front tires, because its too wide for trailer.....