Summary, awesome! Love it!My wife and I are in a house that has 2 levels and hanging lights on the roof above the garage was impossible and dangerous because of the slope of the roof so you couldn't do it from above, and I didn't have a ladder high enough to reach. BUT the you could get onto the ridge of the first level and then climb to the ridge of the second level. Only problem was you couldn't go down the roof at all because of the steepness of it. This meant we were going to go "lightless" for christmas this year.I did check with people that hang lights professionally and the going rate was about $175.. Way too much for me to spend. So I did some searching and found these ridge mount ladder hooks. I had no idea something like this existed. After reading the reviews I wasn't sure if they would work because people mentioned how unsafe it was, etc. But I decided I could always return them if they didn't work so I pulled the trigger and ordered 2.The box arrived and was beat to hell, but that was ok, these are made of steel and if it can't take the abuse of UPS getting it to my house there is no way I would trust it with my life. Good news, they were in perfect condition when I pulled them through the hole in the box.I was using these on my little giant which I wasn't sure would work, but I am happy to say it did, it worked perfectly. I was able to secure both hooks (I ordered 2, they only come in single units) and did some initial tests by banging it and pulling on them to see if they would pop off, they didn't.I was ready to hang the lights. I carried everything up to the roof then lifted my ladder up and walked along the ridge to the second level, put the ladder down and in about 7 seconds felt totally comfortable and confident. There was no wobble, no shaking. These things held onto the roof well with no damage to it and kept the ladder exactly where I wanted it. I was able to then climb down the ladder which was hooked onto the ridge and hang lights along the slope of the roof. I then got to the bottom where the gutter was and sat on the bottom run and felt secure while attaching lights along the gutter. I had to climb up to the ridge, move the ladder over a few feet and then climb back down and start all over as I was doing part of the roof, but the entire time I felt 100% safe.The cost to have someone hang lights on my rood was $175. These cost me $21 each for a total of $42. It took me less then an hour to do my lights and I saved $133 PLUS these things will last for years. This is one of the best tool purchases I have ever made, I love these hooks. If you need something like this get these, but note they only come in single units so you need to order 2. Some people say you can use just one, I wouldn't trust it. With 2 the ladder is held at 2 points which prevents it from swinging side to side. With one who knows what could happen. I submitted 2 pictures of my ladder on my roof as well.If you found my review helpful please marm it as so!