Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: Are there any warnings in the directions from the manufacturer that indicate this product cannot be used on a roof with a ridge vent?
Document: Much easier to control than another model I have that has weels that swivel. The radius is large enough to clear a standard ridge vent. Very happy with this model.
The write up on the ladder hook said only one hood was necessary. I used two of these attached to climb a steep metal clad roof. My roof has vertical ridges along the joints and a raised ridge cap for ventilation. The small wheels, on the hook back, managed to roll up the roof and over the ridge cap with no problems. Flipping the ladder and hooks over was also relatively easy. Most importantly, the ladder hooks held securely while climbing up, working on, and climbing down the roof.My only complaint was that there was not sufficient adjustment in the slot that attaches to the ladder.
very sturdy, and doesn't shift or wobble around like I worried it would. I bought a pair, but turns out I really only need one, If I'm the only one up there. My roof is so steep I wouldn't try anything without these, or some repelling gear, Ha-Ha! Quality product. I recommend this for anyone who has a use for one.
First, I used this on a 12' ladder on a 12/12 pitch roof to paint my house ( dormers) . It was stable when I duct taped the item to the middle of the ladder rungs and it worked great very stable......on my ladder it was unstable with out being taped into position. Second....the rubber on the &#34;t&#34; on the hook...Both sides split apart......after a couple uses.
Great product. easy to use. one hook works great. two hooks on one ladder is a bit top heavy to move around, I found one hook to be totally stable to work off of. great for installing metal roofing on a steep pitch. with two hooks its easy to split your extension ladder into two roof ladders and easily work both sides of a pitched roof. these hooks are easy to install, im not a huge fan of the wingnuts but they work otherwise 5 stars.
This roof hook is very solid and easy to setup and use.I was pleasantly surprised at how well it was built.
Should be more rugged than that.I'm glad I bought it......but make sure your safe when using it.
It works just as I expected. Biggest & only problem wing nut & bolt to the wheel bracket  are very poorly threaded.
I had to use a shim on the ladder rung in order to attach the hook tightly. Fortunately, once I stepped on the ladder the whole thing tightened up.
Answer: yes