I just got the trailer Nashbar sells. If anyone has used it, please let me know the safest top speed you've experienced. Does it ever bounce? How to you use the plastic clip things on the side of the bag that comes with it- the ones along the opening? Any other info would be great too.

I will now reply to this old post.
I went to the shed and got a roll of that green shrub wrap, lined the belly in order to keep less than large junk from falling out the front. It lets the air through and I cut it to fit and zip tied it.

I loaded my Nashbar down with a weeks worth of grub, gallon milk, 2 liter sodas for the wife, Potato's,
Cans of veggies on sale, one heavy load, for groceries, made this same trip at least 10 times last year, about 6.5 miles each way.

Empty I can't tell its there, loaded it pulls with way less effort than the kiddie trailer, just got to be ready when I stop.
Carry a tube for it.

As far as speed goes, empty, forget about it, just go, loaded, just remember you gotta stop, and it takes more to stop a load and more to get it rolling.

I have a kiddie trailer with 120lb capacity, it is no fun. but can haul weight.
I will take the Nashbar for cargo.

If I get to where I am pulling more I may consider a Bob.

I have a BOB and the main thing is to get your heaviest items at the bottom and as close to the rear as possible. It means completely repacking everyday, but if you get the heavy items at the top, the trailer will get squirrely on you at anything above 25 mph. I've done over 40 with it loaded correctly.