Thank you. I do think he is trying to save money. If there are too many holes in that section I trust he will not use it. Given his pond is much smaller than mine he should have enough. I also think he wants as much of the liner as he can get in case of future expansion. Next trip to our home I will discuss the patching matter with him. Btw, have you ever heard of pond stores that provide professional grade patching services. The Dallas/Ft. Worth area could have such a service if there are such.
Back when I was a youngster I worked at a true automotive service station. In the 1960's tires used inner tubes. The best way to patch a puncture was with a hot patch. A hot patch is a round small metal cup with rubber sealant on one side and flammable material in the cup. It is clamped onto the tube or tire and the flammable side is punctured with a sharp tool and set on fire, it then bonds the rubber side to the tube or tire. Basically a vulcanizing process. My point is that it seems such old technology might be a good method for affixing patches to EDPM liners.