Re: [andy2] Lineover?
Many BASE jumpers have never experienced a BASE lineover, so there is very little practical response available to your question. Also, many BASE jumpers don't carry hook knives (although pretty much all the manufacturers recommend it, and I know I've used mine, I only know of one other case in which one has been used to clear a lineover in the BASE environment).
In reply to:
What do you do in line overs?
It totally depends on what is happening around you. If you are low, you may not have any time to deal. If the object is close to you, your first consideration is object strike. If the ground is close, your first consideration is landing (or, more likely, ground strike).
In reply to:
I know this is pretty vague, but do you take the time to flare the toggles, hoping the line will "fall off", or do you go straight for your hook knife?
On my lineover, I pumped the toggles twice, saw that it wouldn't clear, stabilized the canopy in flight away from the object, then used a hook knife to cut the toggle. You can see the video on the skydivingmovies.com server (it's pretty busy right now, but I'll try to post a link once I can get into it).
In reply to:
Does it depend on how high you are AGL?
Completely--as well as other things. How fast is it spinning? Can you land it? Can you steer away from the object?
I really like Faber's summary best--hang on to your hat, and deal with your sh!t.