Just to put this whole boating thing in perspective I did a little comparison pricing of our favorite long weekend vacation of going to Catalina Island the other day, and was pretty surprised at the outcome.
Before we had a boat that could make the crossing we would drive to Dana Point, take the ferry over, stay at a hotel and eat out all meals. Hotels are expensive there for anything decent and good food isn't cheap either.
A typical Catalina trip for 5 days would run a minimum of $2,500-3,000 for three all-in the old fashioned way. Last trip over we burned $650 worth of diesel @3.75/gallon going 20 knots, moorage was another $170 and we cooked (and drank) almost exclusively on the boat. So we did that trip for nearly 1/3 of a traditional trip, had our own little place and didn't have to drive, park, schlep our stuff back and forth on a ferry and overpay for a hotel and food. Oh, and we had the best view possible from our flybridge.
So, if fuel went up another dollar a gallon that trip would be two hundred dollars more expensive. Big deal....
Don't get me wrong, I'd don't want to see higher fuel prices, but considering the enjoyment we get from boating I just don't see it affecting how I boat.