I have two posts that support the mooring cover on my boat, one in front and one in back. The two poles are connected at the top by a strap. Each pole is then connected to the front and back of the boat with tensioned straps. After the belts were tightened, the belt route from the C-pillar to the A-pillar became very tight. My mooring cover is properly maintained. My belts were starting to wear out. These belts worked perfectly.