Seriously?Remember that prop guards will also reduce your flight time by about 13% so don't use them unless you REALLY need to.
SERIOUSLY!? That's amazing. Can you post a link to your vid? Just removed the prop guards on the strength of this info. It's no wonder I've only been getting 16/17 mins (albeit in high winds) so hopefully this'll improve matters...Actually I'd round up to 14%...Effect of prop-guards on flight time (13.9% reduction)
I did the video so let me know if you have any questions. I was equally surprised, and really haven't used my prop guards since.