Try Tru oil ,but whatever you use,scrape down to bare wood to glue anything,I’m fairly new to wood arrows but much experience at glueing and working wood ,any kind of finish prevents glue from adhering to full effect.You can either glue fletches before finishing or finish and scrape off where the fletches will go,I also like laquer and it has a harder finish when dry which might aid in less friction when released,it also drys fast.
Do I always have do that insane anti robot verification thing whenever I make of reply to a post?