The Paiute in southern Utah would use current, for quick drying they would scrape off just the outer layer of bark to prevent cracking leave them for a week-ish( more or less depending on dryness and need for arrows) and then scrape them the rest of the way. I have had success with red osier dogwood and wild rose. it adds to scraping time but sure speeds up drying and I have had 0 cracked shafts from doing it. If You try it on some of them you should let us know how it works.