personally, and with all due respect, even if the 2" feather was 2" tall it'd be worthless for bowhunting as it's usage is akin to gambling.
no matter how well tuned yer arrows are to a bow, going hunting afield challenges all your mental and physical abilities, your bow, and your arrows, but mostly YOU.
you want your broadheaded arrows to straighten out and fly true no matter what the venue, how bad the conditions and how radical the shot setup. you owe that to both your quarry and you.
do yerself a huge favor and fletch up with a minimum of three 5" helical feathers and save those mini fletches for flight or target shooting.