You can cook them without soggy bottoms, even with the crust at the bottom. What I do is I adapted a Mary Berry suggestion. She balanced a pie on a jam jar lid. I find this can be a bit dangerous, so I usually put mine on to a metal ring sitting on top of the shelf grid. The metal ring I use has a base which turns it into a cake tin. It is bigger than a jam jar top, and so there is more stability. The ring can be put in when the oven is about to be warmed up, so cutting down the danger to your arms, but you need to be sure before you switch on the heat that there is room for your pie on top. Hope this helps and good luck to your pies.