Just charge in dollars and accept payment in BTC with a window of a few hrs after the job is complete.
That way you can always charge the same for the job and no one will feel like they over or underpaid.
I have a problem with this price rise:
As many people know, I fix people's bitcoin miners for bitcoin payments. Thus I have to account for my time, skills, experience, and material costs (damn FPGAs are expensive when they blow up). I price my work in bitcoin because I want this currency to have a reason to exist other than as a speculation thingie.
Problem is the fluctuations: If I charge .3btc for a service and bitcoin drops from 600 to 300 I don't want to raise my bitcoin prices so I kept them constant. Likewise if it goes from 600-1200 I don't want to change my prices for the same basic reason (I'm doing work for a certain amount of bitcoin). But if it keeps going haywire, what do I do? What's fair? And at what point am I simply doing work for dollars instead of Bitcoin?
It's complex.