Question regarding cock feathers.

Went to my friend's daughter's B-day yesterday. Havn't been to their home in
the country for a couple of years. He has chickens for eggs and said he only
needs 1 cock per 9 hens leaving him with 4 unwanted cocks. Two Rhode Island
Reds, one mix and ???. Capes and saddles interesting. these cocks are about
10 months old. Feathers look good. So... we skin the cocks, scrape fat from
inside skin, tack on board, rub with anti-freeze, let dry, clean feathers...
(Didn't ask him about his geese & goats)

Or my question:
Is it worth it? (for the experience & feathers)
Or, should I just go buy feathers at my local fly shop?

I would appreciate your thoughts and experiences with obtaing your own fur
and feathers form the "wild".
Guy
(Still no bugs on guysflies)(should have some soon)