I find that I spend too much time ensuring that I get every speck of support material off the print plate long after I’ve removed the actual print.
When it comes to the skirt, I always set it to be two layers tall for this exact reason, and I was hoping it’s possible to do the same with the support base.
EDIT: PETG on textured printsheet
You don’t want multiple layers as it will lift and cause adhesion issues. The action of heating and letting it cool once is stressful enough on the material. When you create a second heating, while there is a temperature gradient present already, that will create the stress that lifts edges.
Really dial in your first layer settings. The hack is to just use elephant’s foot for the first layer, but you are not actually dialing in your flow and squish. If you take the time to dial in the first layer well, your supports base layer removal should improve. It is possible to get a first layer printing like glass.
Also, you may have a setting to increase the bed probe resolution. That may help if the first layer is not even.