iceboating.net Minnesota Ice Sailing Association

I wonder if I can get some input on runner sharpening. I've been using a friends 72" or so belt sander and 100 grit belts (the only ones he has). I set it to 45 degrees and it seems to do a good job on my DN runners but is a little short for my Skeeter runners. I'm looking at buying or building a similar but longer set-up. Any advice? Also I have heard people mention stoning to touch up a slightly dull runner. What type stone do you use and what kind of jig do you use to maintain your 45 Degree edge? How about profile? Being a one set of runners guy, is there "standard" profile? If any one has the patients to write a step by step on runner maintenance, I'm sure others would be interested too.