Well at the end of empire strikes back the falcon "stops" then uses its repulcers to lift it into the docking clamp does it not...
and as for the camping outside a shield im not quite sure if sitting out side a shield is a very good idea to begin with... but im farly sure even if it did work somone would be out in space and swing around and blow them up and having turbolazers fireing at you dosent help ...because where your stoped you will be a sitting duck your not going anywhere and your a very easy target so based on that it would be very hard to camp outside one to begin with
now for the gravity issue thingy
heres my thoughts. now i suppose you all know about the Rouge squadron game well the reason ships dident stop in that is well lets face it most of it was on ground and guess what happens when you shut off your engines when your on a planet with GRAVITY! thats right you fall to the ground and crash...in space there is no gravity and in the starwars world when you shut of your engines you stop...when somone disables your engines you stop when somone blows up your engines you stop ect ect... plus it gives an intresting tactic to dogfighting. Someone following you shut off your engines they fiy right buy you keep going 
yay i made a longish post for once