I've never used a Tactacam, but I tried that with my GoPros and always had problems with them losing connection. I finally gave up and haven't had a GoPro with me for the last two season. I did just pick up a clearance Hero5 Black and have been thinking about setting it up on the ground and just letting it run like you do for your second angle. I like having the A6300 for my second angle because I can grab it and take pictures if I need to. I've played with just about every option for a second angle camera and really like my setup with the A6300 the best. Easiest and most reliable I have found.