Dave for everything you might want to know about deer hair the man to contact is Chris Helms. www.globalflyfisher.com/staff/helm/selecting
You can purchase the correct hair for the fly and it will be the best and not that 1 x 1 piece that you have. Last time we were togrther he had 30 hides drying. All deer are not the same -- and he selects the best.
When he spins he will comb the fine hair out, he spins and always makes a half hitch in front after adding each piece and then pack. :(