This pump has two separate pump hoses that make draining the boat more effective. The pump can be mounted at half foot rest in the ball area (behind the foot strap) or with full foot rest also in the heel area. The mounting plate is only necessary for assembly in the ball area. It can also be shortened if space is limited. The dimensions below are valid for unabridged mounting plate. For mounting in the heel area holes should be drilled in the footplate (with 25mm drill bit) to thread through the pump tubing.