Picked up a cool pull down patio shade at Costco last weekend. I plan to use it on my back patio since the desert sun can be quite strong in the afternoon. I opened up the packet and inside it said that the mounting holes need to be aligned exactly so they recommended that you use a "laser level" to install it. Now I ask you, who has a laser level laying around their house? I wish they would have mentioned that on the outside packaging. I have a regular level and a laser pointer but no laser level. Needless to say this project is still on my "honey list" at this point. I did not even know that there was such a thing as a laser level but I guess I will need to pick one up. I probably could get this project done with a tape measure and a good sharp pencil but that might be a two man job since my covered patio ceiling is high and the floor is a little uneven since it is made of stone blocks and not just flat concrete.