I have bagger setups on a couple MTD's - the original hitch is about 2' under the bagger bracket - i happened to have a bolt on hitch from a late model simplicity , so i bolted the hitch on the bagger bracket - as long as its nothing heavy, it should tow a trailer fine.
One tractor i used for parts had this huge hommade hitch that bolted to the back of the tractor made from 1/4" steel - it wrapped around the back of the tractor chassis and bolted thru stock bolt locations and used a 1 1/2 trailer ball on it - i still have it in the shed.