is shellac the best finish for bleacher boards = laminated edge grain doug fir. i have a lot to do. i love varathane water based floor finish. if i take my time i can plug the holes and you can’t even tell it . i like the yellowing of shellac what is the best way and save some money. i find it is best to run them thru the planner. i don’t know how they finished them when new. had any one ever used a stripper and if so what kind.
Addressing the shellac only; if they are going to be used outside shellac is moisture sensitive even if top coated and may cause problems in that application. With regard to cleaning them up, IMHO I would stay away from chemical stripper.