How reliable are the Thule Hullivators

I put in a plug for Malone whenever I can. I absolutly love the Telos side loader:

http://www.maloneautoracks.com/loading-systems.php

With the Telos, you still have to manually lift the boat, but you lift one side at a time and it locks in place as you go. I weigh about 150 and have no issues getting my Revo ontop of my Yukon even in strong wind. I looked at all the side loaders. The Malone system is substantially cheaper than the Hullivator. I bought my entire setup in Febuary of this year and have logged around 15 trips with it and each time I go I seem to be able to load the boat faster. I additionally bought a step ladder to help get the boat all the way into the saddles and tie it down. The only issue I've had with it is that on a couple of trips I tried to load the boat with sand on the bottom - the sand gets stuck in the arms and makes it hard to load. Simple solution though - Get the sand off the boat before you start!

Since you say you have shoulder problems, the Hullivator might still work better since it has the gas assisst. If you haven't bought yet, I would go to a local dealer that sells both - rig both of them up and attempt to load your boat. Good luck.