So, since getting the Tascam I've found I don't really have to do too much to it at all to get a good track out of it.
Placement is the main thing. I use it in a reasonably small room with drums, bass, keys, 1x guitar and vox (with the vox and keys going through a PA in the room). Generally speaking, I keep it away from the drums, with mics pointing towards the PA speakers and on top of an amp. I've brought a tripod with me a couple of times, but haven't used it.
Once I get the recording, I just normalise it and do some slight EQ tweaks in Reaper then convert it to MP3 and drop it on the band drive. It's all pretty easy and only takes 10mins. I'm sure there's more I could do to it, but I don't really find I need to for just sharing with the band.