Help! Repair slices to the feet of my waders.

I've accidentally sliced the top of one foot and the side of the other foot of my waders. I wear them for work, so need them to be dry.
On the foot with top slice, I've tried using aquasure (and then a unholy amount of aquasure). But due to the walking and wader through rough terrain, it just spilts from the tension. Yesterday, I slapped a bit of tape on the top as a quick fix, then sliced the side of the other foot.
Asking for any advice/what to use. They are own by my work and I use them a lot, so I need a fix that will actually hold.
They are Snowbee Granite in a size 5.