So those of us that have had our sparks for a while: What is the max wind speed that you will fly in? I took a quick trip out to a nearby river and was going to try to get some cool aerial photos of a marina and some sailboats on the river, but the wind was about 16 mph. I took off and hovered for a sec, but the spark seemed to be fighting to stay in place pretty hard so I wasn't confident enough to put it out over the water.