We bought a kiddie type trailer 4 or 5 years ago to haul our dogs on Sunday rides and as a grocery getter. It attached under the seat post. It was real jerky when starting and stopping but not too bad when moving. Having two wheels makes it wider so you take up more room on the road and have to be very careful of shoulders where there is a drop off the pavement. On the plus side, it is more stable and drivers seemed to give us a little wider berth with a "Kiddie" trailer.

I now have a BOB trailer that I use for touring. It attaches to the rear axle and I never know it there. It tracks right behind my bike and is almost a pleasure to pull. Because of the single wheel it can be a little squirrely, especially on the downhill if your not careful.

We have since sold the kiddie trailer and use the BOB trailers for any hauling needs. Except for the dogs, they liked being in the trailer when we were moving but wanted out as soon as we stopped. bikerHen