Neither will work on this bad boy as there is a vent stack right above it. All the pressure will go up and out. Vent stack terminates in wall. Gonna cut and assess tomorrow. Done the rubber band clamp before, not scared to use it again. Cant get the "little buddy" bladder as there is a hard 90 right where I need to get down into. I have one and it does work great in the clean out at the base of my kitchen, straight shot under the kitchen from the outside.
