My 1st real experience with long hair was a friends mother that had a long blonde ponytail.
We were both 12 or 13 and on a swim team together. His mother arrived at practice one day with a tail that took my breath away - I never noticed her hair before as she always wore her hair in a bun. Her tail was worn on the crown of her head and hung to mid back. It was thick and a beautiful natural blonde.
I often traveled with Mrs. G & her son to swim meets. I sat in the back of the car, directly behind her and that tail. This was in the late 60's, cars at that time did not have the big head rests as today so my view (and access) was unobstructed. Mrs. G ususally started our trips with her tail pulled over her shoulder. Eventually her hair would slip off the shoulder and come to rest on the seat back. My hand and fingers were in position to touch the silk. You might imagine how nervous I was, touching the hair of a friends mother. I became more bold, moving from touching to playing. I tried to circle the fullness of her tail with my thumb & index finger. The ultimate sensation was to circle the root of her tail.
I imagined she could not feel my adventures but was wrong. Several times she said "what are you dong back there?"
My experience with Mrs. G's ponytail became the standard for all my hair fetish fantasies. My ultimate fantasy is to see a mature woman with a long thick tail - the thicker the better.