What size tractor do you have? It looked like a small John Deere (650 or so) or something comparable. The drawbar should handle anything your tractor can put on it. I think you will find your tractor to be too light before you bend the drawbar.
15 yrs ago I built my first receiver hitch for my tractor. It worked great, but that was only the beginning. It wasn't planned, but I stumbled on to something that worked out great.
I needed a way to put up high tensil electric fence wire, so I cut a short piece of 2" tubing to go in my reciever hitch, drilled the pin hole, and built a wire spool to work off of my reciever hitch. I could take a new roll of wire, put it in my spool and drive the tractor instead of fighting the roll. Don't use it often, but when doing fences it works great.
Later I needed a hay rake to clean up wheat straw after bush hogging. I took an old mule drawn hay rake, cut out the section with the tines and welded on a piece of 2" tubing to fit the reciever hitch and it worked great too.
I have built a leaf rake using hay rake teeth, a 4 shank sub soiler(shanks from my box blade), a section harrow, a C-tine cultivator, used the foot out of an old Farmall cultivator to make a lay off plow for my garden, converted a mule drawn middlebuster to the reciever tube, took a class 0 single turn plow and converted it to the 2" reciever, and made 2 different length boom poles that are shorter than my factory built ones to move heavy logs with. All of these implements work out of the reciever tube. Rather than build the 3 point hitch parts each time I need something new, I work off of the reciever tube. It makes the build simple, fast & east hook-up to tractor and smaller pieces to store when not in use.
I need to get some pics to share my ideas with you guys. Will work on doing that this week.
I have the parts already to build a grubber (search grubber in build it yourself forum) and have been thinking about converting an old cole mule planter to work off the hitch as well. I have a full set of plates and spare hopper for the planter so looking for a way to utilize it to my own liking.
I also have 2 hiller blades to convert into a hiller from the reciever tube. Haven't made that yet but I got the parts, just need to put it together.
Some of my attachments were connected with 1/4 in wall tubing, some I used 2" solid steel stock for stronger pulling/abuse.
It's amazing what you can build using your imagination and a good junk pile. I like to take older farm equipment that is outdated and build 1 row equipment for my own use. You usually can buy it cheap and have little money, a small amount of steel and your time only invested.