I haven't, yet. But I will. One track mind, priorities, etc. Basically I am putting 500 bucks a month in to a skydiving fund, after the mortgage, and before every other bill. Pay yourself first, right?
I expect all of my other hobbies to go on the back burner. Spending a lot less on food, nothing on alcohol or drugs, no concerts for awhile, etc..
Whatever it takes.