Probably once every 2 weeks and yes it just sits around in my back yard. Last time I drove it was at the Sparesbox skid pan (performed terribly, never take a track car to a skid pan, it doesn't skid very well)
E85 is fun, there's a fine line between wetting the plugs and not starting and not enough cranking fuel to get it started. Then there's all the other dimensions of intake air temp, ethanol concentration, etc. I find adding a good amount to the initial prime table makes all the difference. Happy to send you my kebabtech tune file for R&D if you like.