I love my Moleskine, which is my UCT. I draw a line down the left side of the page so that the items are lined up. Each one has a little circle on the left side of the line. I check them off as I process them into my system. When a page is done processing I put a checkmark in the upper right corner. The ribbon bookmark tells me where my latest page is. When the notebook is full I label and keep it and start another one. I don't see any need to destroy the used pages.