Fierce competition in tennis, where even a small advantage can give you the edge, is a fertile place for innovation. Creative thinking combined with careful check for rules about snow forts resulted in this improvement. Granted, it won't work everywhere and for everybody, but snow oriented players could have one more trick to use against the other, snow-free side. :) ~~~ Најновија тактика у тенису - одбрана из заседе.