I'm trying to help my 81 year old father. He can ride his Triglide 800 mi/day no problem. However he can barely walk 20 feet. I'd like to build him a trailer to pull with his Triglide and haul his electric wheelchair. The chair weighs approximately 200 LBS. I've been looking at a trailer that Harbour Freight sells. This looks like a good base to make scooter trailer.

1090 lb. Capacity 40-1/2 in x 48 in Utility Trailer
https://www.harborfreight.com/automotive/trailers-towing/trailers/utility/1090-lb-capacity-40-12-in-x-48-in-utility-trailer-62665.html

Has anyone done something like this? Any other ideas?
It's been about 20 years but I'm sure I can still weld.
I'm trying to help my dad keep one of the few pleasures he has left. Any help or ideas would be greatly appreciated.
edit: Sorry it's been along time since I've been on this site and I can't remember how to make the above link work. If anyone can, that would be helpful also.
Thanks guys.

 

Check Northern Tool on the same type trailer. They and Harbor Freight compete with sales usually.

I've used many of those kits as a base for cargo trailers pulled by motorcycles. That trailer with a 3/4 plywood, cut to size, will handle that easily. Even removing the first leaf. Some I've welded. Some I did not, but used blue locktite and nylon lock nuts.

 

Try one of these. A TriGlide should pull them easily

https://th.bing.com/th/id/R.b42d8776c57602b772d65915b9495e02?rik=zbv%2fQE8YV pxUzg&riu=http%3a%2f%2fwww.pondtoon.net%2fEZTOW%2f EZ+TOW+MOBILITY+TRAILER.JPG&ehk=VFQG6R3Njfu1W5%2fR 5PeHVu8h4j3%2f2xcS4k%2fPKbtkaFg%3d&risl=&pid=ImgRa w&r=0

https://lh3.googleusercontent.com/-V9va6sA0XuU/WOulvOWrU6I/AAAAAAAABJk/9LUOXrsmekA/s1600/Screenshot_2017-04-09-21-55-01-1.png