1) get close. a major issue i see all the time from go pros is people stand too far away from the subject, that 170 degree lens on it fits a lot in the view.
2) get a pole mount. these are good for go pros and you can get good angles and movement
3) shoot more 3rd person. a lot of POV shots are just shitty and dont give a good representation as to what the terrain is like.
4) tripod/static shots always work too.