I simply cut two strips of this plastic and used 100% silicone to seal them over the holes. I completely covered the plastic patches and all around them to hold them in place and provide a permanent water seal over the holes. This part has no structural purpose other than to (normally) hold the water until it can be pumped away. The silicone and new boot will do that nicely and other than some sticky-gloved fingers, the whole job was over in 15 minutes. I also used the same silicone to cover and seal up any other rusty bits in the tub and inside the flange for the hose to the pump.





