It won't skim at 8". It has to be at least 9.5" to do anything, at 8" foam will not even be approaching the riser. These skimmers are very exact in their water level requirements. I can send you a manual if you need. It will skim and better than most consumer model skimmers, but at 8" not a chance. Give me a call tomorrow between 10-5 C or call any of our dealers, Marine Depot, Champion and Premium all stock the brackets and I think Marine Depot also has our suction cups. My number is 512-833-7546, if our hours don't work for you though or you want to use a payment method other than Visa or Mastercard, call one of our dealers, I promise you it will work when you have it set up right.