Bins are best viewed as a distinct enterprise that you use like your own elevator to capture basis and carry. Assuming you keep it in condition there are solid returns regularly- probably most every year if you have the bushels and the market doesn't invert on you- that doesn't happen often but when it does it is often the same year.
If you want to gamble I'd suggest hedging inventory with some form of option strategy that leaves more upside open- delta hedging, put spreads etc., but you need to understand what you're doing and need to have a point where you'll abandon it if something unexpected happens and it goes against you.
But yeah, I've been driving around the countryside a lot recently and keep wondering how many casino bushels are depreciating inside those bins. No way to know.
