I invited the Yiga army to a beach party.
After using the glitch I found I moved the armed bananas south along the path past the fork in the road. I believe triggering the bananas far enough away causes the first wave of Yiga to despawn in a way where the bananas are never properly cleared of this trigger and I can continuously spawn Yiga. I shortened the time so much because lightning took out two or three groups of Yiga during the first summoning process.