I pretty much gave up on split-bolts several years ago and now use the Polaris Insul-Tap connectors. They are not cheep but much faster to install (and remove) than split bolts. All of the local supply houses stock them. If you haven't tried them I suggest you give them a try. You can look here for more info:
http://www.nsipolaris.com/products/pdf2001/p1.pdf Curt
