I'd say spacers or stiffer springs, and some 40-50wt depending on the outside temp. I like my rear end to come back up around 90% after being compressed. I run the front as stiff as possible with the stock springs, though that's just a little stiffer than the back. I don't like stuffing a front tire when breaking hard and turning; makes 'er roll too easy. I also hit a lot of jumps with no landings and this helps it from bottoming out.