two people is very helpful, I filmed all last season and it's a lot of work, but is rewarding. I missed a chance at a huge 12 point in Indiana because he walked under my tree at 5 yards and i was self filming and couldn't get the camera on him in time, then i just tried to shoot him off film and missed my chance :( so you need to be prepared for possibly missing opportunities. I'd say a big part of it is really knowing your equipment very well, if you film with a buddy
communication is so key, hunt as close to each other as you can, go over everything you'd like to accomplish and possible concerns before the hunt and situation. If you are self filming make sure the camera isn't going to be in your way, check all your different shooting positions, and make sure you can work your camera with as little movement as possible and like said above extra film, batteries (cold weather can kill them fast) and knowing your lighting and focusing. To make a long story short it can be frustrating and at times very difficult, but stay focused (LOL) and in the end it's very cool to have your adventures on film