RE: Landing skid for glider
what I have done in the past for this is to go to Home Depot and purchased a stip of rubber non slip surface (typically used for stair steps) with the self adheasive backing and cut a strip of this with sissors to fit to the shape of nose of the bottomof the plane and slap that baby on there. works great. One tip, recheck your CG and remove a little nose balance weight to compensate for the addition of the non slip surface.
good flying!