I wanted some way to bring the kid along on longer bike trips, but she's barely out of training wheels and her kid-sized, fixed-gear bike with small wheels was never going to let her keep up. The tagalongs seemed like a possibly solution, but they were big, heavy, expensive and then she doesn't get to ride along. Then my wife found the Trailgator and it works like a charm. I connect the kid's bike, she gets on, I get to take her through traffic and at speeds she could never reach by pedaling and when we get to the bike trail we uncouple and she bikes on her own until she's tired. Then I take her home again - no muss, no fuss.Coupling and uncoupling takes about 30 seconds, if that. The connection is sturdy (as is the whole Trailgator) and the towed bike is exactly where it should be. You definitely notice the extra weight and you'll need to take corners more carefully, but it's really not a problem. The kid's pedaling doesn't seem to help at all, but it may make them feel like they're doing something. Hills are a challenge and you may want to ensure you've got low gearing if you're tackling a bunch of them. But in general I don't feel any major issues no matter how much my kid is shifting, pedaling or looking around behind me. Just be aware you're towing about 80-100lbs of combined bike and kid behind you.Installation is not as difficult as some people are complaining about. The instructions are pretty clear, especially if you carefully read them and look at the accompanying diagrams. The design of the whole thing is actually pretty clever. I borrowed a torque wrench, but in retrospect I didn't really need to bother as long as I cranked things down as tight as I possibly could. Some points:- Make damn good and sure your seat height is where you want it before you start because you will NOT be able to lower it after the Trailgator is installed.- Find something to use as non-slip padding under the mounting bracket for the kid's bike. Someone else suggested an old inner tube and I ended up using a rubber backing for carpet. Either way, you are going to be cranking down those curved U-bolts as tight as you can and you do NOT want them to slip. This will prevent damage to the paint on the towed bike and keep anything from slipping - which is where I think most of the complaints are coming from. Tighten your damn bolts, people!- There are a number of variable parts that support different bike shapes and sizes. Again, read the instructions carefully and use the options you need to fit your bike. The shims for the mount on the towed bike are going to be essential to get the correct ride height and you may have to test that front mount a couple of times to get the angle correct. A power nut driver with a deep socket is ESSENTIAL for this! Same goes for the shims that fit around the seat post and front forks. Try to see what fits and be prepared to backtrack if it isn't working.- The front wheel stabilizer seems to be easier to install on the handlebars, rather than the front fork but YMMV depending on the towed bike.- You may have to think a bit outside the box. For example, I found it easier to connect the storage bracket to a hole for mounting a carry rack rather than to my rear wheel bolt since the quick-release got in the way. That took an extra washer or two to get the spacing right, but it was simple enough and the bracket is rock solid. Overall, the whole thing adds about 20lbs to the towing bike when stored, but it's not particularly noticeable. You will not be able to use this with any sort of of rear carrying rack, though.Overall, this is a fantastic item and worth every penny. I particularly like the fact that when by daughter outgrows her current bike and moves up a size, I can just move the mounting bracket over and continue to tow her for a few more years. I found it pretty easy to install and it works better than I expected. Excellent product with a very clever design.