Given all this talk about the frothiness of GoPro, whose stock has risen over 100 percent since the stock went public last week. It's worth checking out Garmin, the maker of navigation devices, which saw similar froth when it went public in 2000 at 14 bucks a share. The stock hit a peak in 2007 and then fell from grace. Garmin was the biggest supplier of GPS devices once upon a time, but now that smartphones have the functionality, its hurting a bit. Thankfully, its outdoor, fitness, aviation and marine segments now make up 58 percent of total revenues. Its launched a new navigational app called Viago available in Android and iOS versions, which offers more features than the free apps Google Maps and Apple Maps, but its not free.