looks like a good job. let us know if you find any improvements you could have done as time goes on in use. the only thing i may have done extra would have been a more secure attachment when in tow. the two bolts holding the tongue are plenty strong im sure, but as time goes on and the two holes and bolts get some wear you will start noticing some slop when hitting bumps. bolting it secure so to eleviate that slight movement would seem to reduce the wear tremendesly. i know that takes away from the quik release quik attachment deal, but i dont mind the extra time to get rid of that clunking noise when hitting bumps. i even weld a bead onto the hitches to make them fit tighter in the reciever to get rid of that noise too. just a thought here, not knocking your work. i think you did a great job and its a great idea.