Hi Natalie, We haven't done Crackle yet....I may have mentioned it in passing but that episode comes out later this year. However, if you've watched the Monk's Belt episode, Crackle is woven like that. Every other pick is an alternating pick of plain weave. I like to put my 2 tabby treadles on the left side of the loom. Then I set up my shuttles like this.....I start with the left treadle first and throw the shuttle from the left to the right, then a pattern pick and it doesn't matter which side you throw that one from, but your next tabby pick should be the alternate tabby...the treadle on the right (of the 2 tabby treadles) and your shuttle is on the right. This helps you keep your alternating tabbies going....you don't have to keep track of which one you threw last. If the shuttle is on the right it is the right tabby treadle, if it's on the left, it is the left tabby treadle. The treadling would be 7 miles long (slight exaggeration) if we put in all the tabby picks. If you have ever looked at an Overshot, Summer and Winter, Monk's Belt pattern they all use this same technique...the tabbies are just mentioned not drawn into the treadling. Well, that is usually how it is :) Hope this makes sense and if it doesn't watch the Monk's Belt episode.