Keeping notes definitely helps. Tap tank, to dislodge any air bubbles, at the end of each agitation cycle. Do not process more than four 35mm reels or two 120 reels, in one tank, at a time. Agitation happens at 2 minute intervals. Initially, the first 30 seconds by twisting the tank 180 quickly on it's vertical axis.
Agitation is done exactly as above.
Care must be taken to not scratch the emulsion or to leave finger prints on it. There are several ways you can process Tech Pan sheet film. Or make your agitation device by cutting holes into an 11x14 piece of Plexiglas. Make an outline of the film layout and drill 2 holes on each corner of the film outline. That should total to 32 holes.