I use paper and number my row and blocks. I like to go across and they would be A1, A2 etc. my DGD helped me once with pinning these papers to a quilt and she put them vertical instead of horizontal, drove me nuts. Yes, I can get up and down but if my blocks are exactly where I want them to be, I don't care. It's the process not the outcome I enjoy. Well, I enjoy looking at my finished quilt top with no two fabric touching each other too.