I agree with Nightwish that HOVER requires a MOVE action. The FLY skill clearly states that use of the FLY skill is either as a REACTION or as part of a MOVE action.
HOVERing is clearly not a reaction, so therefore it is a MOVE. It is a flight maneuver (just like sharp turns) and requires some amount of concentration and coordination on the part of the flyer.
This means that if you want to FLY and do a FULL ATTACK action, then you need the HOVER feat (which allows the user to HOVER without a FLY check) or you need to use a spell like AIRWALK which treats air like solid ground in regards to movement.
I know someone will say "What about a 5 ft step?". Taking a 5 ft step while flying means you are no longer HOVERing, but you are now moving less then half your FLY speed which also requires a FLY check as part of your 5ft step.