The metals edges were one main element, as you could buy cheap plastic boards without them and "ride in control" is a major mantra on ski hills.

There was also a big social "not on my hill" snob element, with snowboarders seen as bringing a "bad attitude" to the gentlemanly sport of skiing.

I skied for almost 10 years before snowboards hit the scene, so I saw both sides of it, and as an instructor in the early 90s made a big point of asking snowboarders "please at follow the saftey rules, don't give them an excuse to kick us out".

Having my lift ticket ripped and getting kicked out over building a one foot little jump on the same hill that has 20 foot gap jumps, hand rails, and a halfpipe today always makes me laugh.