What it says in the thread title, which delays do you use? BOSS DD-20 Giga delay
Use them in front or in loop? Loop, for the exact reason Hunter said.
Parallel or series loop? Parallel, but with the mix knob usually set for full series action.
Multiple delays for different toanZ? A couple of patches, a small delay is permanently on. For clean tones,
I usually turn on a wetter delay patch with chorus from the DD-20 itself.
Tap tempo or manual adjustments? I haven't adjusted them for a while :) Manual adjustments usually however.
Do you tweak it a lot or just one setting and go? I do get the urge every now and then but usually forget and go.
I wanna know it all! I used to have a Line6 DL4 in the place, but it didn't work too good with the line level loop. It expects an instrument level signal and would have required modification to work properly.
-Zaned