I assume by "no wax" you are referring to classic style skis with the scales in the middle. If that is the case your buddy is right. Wax the tips and tails and you will notice a difference.The swix LF wax is a little over the top for this type of application, you might consider the Toko Grip & Glide Wax or one of the cheaper glide waxes. Higher end waxes are made for specific temperature ranges of snow. Lower end waxes accommodate broader temperature ranges but are generally slower.