i have jesters on my jj's and they are mounted at recommended witch i think is -5 if you want to ski backwards alot i would go father up to more like -2 or -3
Mount them at recommended , they are a 5 dimension sidecut ski so if you mount them they at -2 or something else beside recommended, because they will not ski the same as they are suppose too. Btw i think Tanner have them mount at -3