i used the base that the gopro comes packaged in and just angled it so the lens was pointed right at the apex. then i just left it running for 30 mins or so while i took a break and edited out the 'dead times'.
this time was just an experiment to see if it would work. now that i know it works pretty good, i'll look into making that base taller or a tripod.
i haven't seen any gopro3 footage yet, but i think it might be even better with the 120fps option and flat lens to remove that walleye.
Cool. I have a cheapo small tripod that will get me about 18 inches above ground. when not expanded, it fits nicely in a backpack. I was thinking on doing the same you did but on one of my favorite back roads.