Limiting yourself to a 10 minute maximum is pretty much the rule at most fields - especially if there are other fliers waiting behind you.

I've been up the field on a few occasions where I was the only one there. I'd fly for 10-12 minutes, land, refuel, check the RX pack and fly again right away. Wound up putting up 10 total flights for about 90 minutes of air time. I still had battery and fuel left but I was getting tired and pretty hungry. Decided to call it a day.