I think the only senario where you would have time to aim for anything would be when you jump without a rig. The other times you would be pulling all the handles until your googles filled up with blood.
So, if I jumped with out a rig, I would either aim for the nearest skydiver and ask to borrow his (he made need some persuading here . Or, if I was on my own, I would aim for that big pile of cardboard boxes the stunt men has just built on the new james bond movie set.