A:
Fishing in Remote, Backcountry Waters is perfect.
Float Tubes may be used on lakes. Float tubes can once again be dangerous on large lakes in the event of high winds. Float tubes are not designed to "ride the waves" like a pontoon boat or an inflatable kayak is.
Float Tubes, while they can be used in rivers, are most definitely not recommended for river fishing. This is especially so if the river is fast moving, has rapids or has no current at all. Indeed, on fast moving rivers or where there are rapids, a float tube can be downright dangerous - especially if you are wearing waders.