Eric, could you post a link to the clamps you use that work good?
I was at one time buying these at Menard's. A bag of 10 was around 8 bucks then. They are 2 3/4" and stainless steel. What I like about them is once you trim the ends to fit nice it leaves very little of the serration left, it is mostly a nice smooth solid band and with some grease on them tighten down nice without biting in. Of course the last time I went to get some there the ones they had were way more serrated
I think I have found this same brand on the internet if the product matches the picture. I have also seen some links from members showing some nice ones that are not as wide as the 1 3/16" that these are.