New Be here, I have just enough yard to run out and back loops. Putting in a 5 ton unit, but wanted to add an extra loop just to be safe. I'm debating on whether I should run 6 600' slinky loops with 3/4" pipe or 6 600' out and back loops with 3/4" pipe. If I go the out and back route, is 1" pipe worth the extra cost??