GoPro is trying to update its business model, but there could be a limited runway ahead if things don't start to improve soon.Share prices of GoPro (GPRO -7.43%) are down more than 60% over the past year. Investors are clearly not impressed with what's going on at the action-camera maker. The company has a plan to overhaul its business and the truth is that it may not succeed. Management could also run out of time to get it to work. The company's future is a bit blurry at the moment.Here's what you need to ...