That said...here are a few tips that I use and share in the Letterpress Curiosity Workshop. They are my way of doing things and I hope it's useful to you readers.
Above are photos of the Boxcar base in action with Boxcar photopolymer plates and my platen set up. I'm not in the habit of changing my tympan paper. The typman grippers take a mighty might to move and it's just a downright hassle. It's another reason why I don't use gauge pins. When I did use gauge pins, I had to switch the typman paper to new ones quite often.
Instead, I've got just enough typman for every run and make adjustments with packing per project. On the platen I've placed a sheet of grid paper that helps me line and square up my cardstock. This is super helpful when it comes to blind printing and when I'm not using crop marks.
On top of the grid paper, I've placed a plastic sheet. This comes in handy when a print is accidentally made without cardstock on the platen. Alot of my workshop participants have done this and their eyes go wide with fear. You can use baby powder to help take away some of the ink on the platen/tympan paper but it's much easier to wipe it off the plastic completely and it's like it never happened.
I've also mentioned the use of photo corners before. I use these because gauge pins would get in the way of the base and do damage. The photo corners aren't without a disadvantage though. They prevent printing a small area on the two corners of the cardstock. But for the most part, it hasn't hindered any designs I've made. Sometimes you just have to design around the tools you're working with.
If you've got any (usual or unusual) printing tips and techniques that have worked for you and you're willing to share, I'd love to hear about it.