Review of the X2Cycle Tandem Rack Trail-a-Bike

I discovered this unique product while doing research on the Trailgator to pull Mason behind me. We needed to move him out of the Burley d'lite (which I LOVE) but he is SO not ready to ride on his own for any kind of distance.
Enter the X2Cycle Tandem Rack, which mounts on the back of a bike and looks like a storage rack for bringing along a bag or cooler but a telescoping arm comes out and attaches to another bike. This allows him to hook on and off throughout the ride as he desires, or is told to.
Pros:
Your child will not outgrow this as it works for adults too! We haven't tried it yet, but the product purports to also allow two adults to ride in tandem potentially allowing a slower rider to keep up with a faster one.
Allows Mason to hook on and off at will.
Folds up easily and is very lightweight but strong.
Didn't have the safety issues that I've found with the Trailgator.
Has an automatic disconnect if the rear rider is venturing too far to the side of the front rider.

Cons:
Pricey $120 + $10 shipping
Seems that the one being towed needs a good, light bike or it's VERY difficult to tow them. I found it more challenging to tow Mason alone with that than the two kids in the Burley.
Good communication between riders is a MUST!
Rider being towed must be old enough to easily ride and steer on their own both to stay in line while being towed and in the event that they become disconnected.
After a particularly rough disconnect, one of the bolts on the connector part on Mason's bike went missing, so now we need to go to Home Depot and find a replacement.

All in all, this product has great potential that we haven't fully explored yet!