hmm. i like that idea about having the ads on videos that reach a certain number of views cause it really does satisfy both sides of the equation. but even then, the ads shouldnt be longer than 10-15 seconds
as for ads on the rest of the site, there has been a time where i was looking for an add i used to see daily on ns, that had something to do with ski banff deals, but i couldnt find it. so maybe for all ski trip related ads you could have a small community section called "ski deals" or something like that for people who might be thinking about planning ski trips depending on the available prices? it could also have different sections for different deals like deals on skis, outerwear, etc
thats all i could think of for now