Pop-A-Pole prevents water from pocketing on the cover. Articulating foot and constant pressure enables the poles to be angled or put in irregular places. Poles will expand and contract with cover movement (covers shrink in extreme sun and heat). During extreme weather (wind, rain and snow) poles will compress, preventing damage to the cover. Provides constant pressure while transporting (poles will maintain pressure, eliminating them from pushing through the cover). Eliminates the need to check pole tension during transport (manufacturers recommend every 50-100 miles traveled).