Can’t Butterfly Push

I’m a 53 year old athletic and in shape goalie who CANT butterfly push . I can only slide if I’m pushing off the post . If I’m not against something I’m EFFED! I played inline for years and years , the best I can do is the shuffle which looks ridiculous on ice . I’ve tried the tip of the blade , the whole blade and the just the back . At best I turn . Is it because I have a narrow butterfly ?? I admire these guys that can do a marathon around the rink in and out of cones. Is it my age ?? Can’t increase my game because of this deficiency 😩