I went long in 2012 and added in Aug of 2013, both times taking profit on half my positions, and hedged remainder as price went up too fast. It was a time I started to alter my long term model to becoming more risk adverse. Have taken several stabs at finding the lows, sort of knew December 2015 lows were not going to be low enough as other energies were dropping and would drag NatGas down as well, so when hit 2.5, I hedged profits to watch futures eventually stop out at breakeven but didn't lose all the profits. Since mid February to beginning March I have been a buyer. I think the lows are in as Crude Oil is higher, but my opinions are not how I trade and only trade my Trading Plan which is automated. Hedging doesn't always work, I have set limit of how long as time decay chews them up, I can lose on futures position and price just stops and may start to go back up where I can lose on the hedge as well, always trade knowing you have answers before a question comes up.
Risk aversion does require much study as I never quite understood most of the books, LOL, seems too technical to me, but comes down to balancing act for so long in my case of entering the market often trying to find extremes and using options so my account doesn't take many losses, I have rules of how long I keep options and futures positions, good trades just take off in desired direction pretty quick, and when I think the chart has gone too fast too high, hedge the profits so you don't lose it all. Learn much more about options, not only will they save you from huge loses, but you can do credit spreads when markets are not trending. I have changed my model to become much longer in duration, if you look at nine year chart of all commodities they go from highs to lows to highs, so I am now trying to get min of 75 to 55% of ranges, so many rollovers, often times staying in trades years and some years are mostly option decay profits.
Long term trading for me is so much more interesting now cause of the options, but am sure in few years it will slide into boredom as well. But boredom is financially good.