A couple of weeks ago I bought an EZ-UP Dome II for $99. It is specifically designed to work better in breezy conditions. I put it off for too long because I thought it would be a hassle putting it up by myself. I should have bought this thing in my first 2 months of service, it is that good! It cuts down on heat and UV though I still cover the work with shop towels. The quality of multiple repairs has gone up and the customers like seeing the red carpet treatment. I pull it out to do long cracks and multiple chips. For the easy single chip I will just go with the golf umbrella and shop towels for the sake of time. I always carry it with me and don't sweat the possibility of rain while doing a job. This retail store no brainer ranks up there with the 110 volt 24 inch black light wally world sells!
I also use the Glass Mechanix UV Bubble and find that I works grate most of the time. I not only use it on the windshield to cover up the area while I am working, but use it to cover up my bridge after I have completed the work on the windshield to prevent the resin from curing in my injector bridge until I can get it cleaned up.
Until fairly recently, LR did offer both the clear as well as the amber screens, but they were offering only the amber when I called them. However, they were still able to supply the clear one at the time I requested it. You may still be able to get one, but yes, you do have to ask.