I always do either 100% or 0% hedges: With a 100% hedge, I am either angry (if it doesn't work) or happy (if it works). With a 50% hedge, for example, I'm either angry (if it doesn't work) or angry (since i could've hedged more than 50%)... :p
In my personal opinion, that is not the right approach to take. A 50% hedge (or, better, 20% or 30% rolling hedges started at different times) is like an insurance. You will not hit the bottom of the fuel chart, but you know you will not hit the top either.
A 100% hedge is like a slot machine pull. You may win small, win big, lose small, or lose big, and it's purely random/luck unless you have some way of predicting Sami's random fuel prices.
If you pay for auto insurance, you should not get mad if you spend the whole year without a car crash, even if it means the insurance company did not have to pay you anything. Maybe you will have some regret and think "in retrospect I should have just risked it." But since only hindsight is 20/20, the fact that you didn't encounter a disaster that required you to get an insurance payment is not really something to get angry about.