It is tough to get into solution so you need a good, strong rolling boil. More time the better. Even after 60 minutes i had plenty stuck in the sides of the brewpot. I would use regular hops for anything other than the hop oil bittering addition @60-90 minutes, but have fun & experiment.
Beersmith can help calc IBU's if you know the AA%. I was able to figure out the value for the YVH hopoil if u wsnt it.
Ps- baking soda will help remove hop oil.