Years ago some one told me he did this and would straighten that situation out: Cast out, reel in and take all the lines that crowded you in with yours.
They get pissed at you, you are already pissed at them... and do it again.Tell em your "just learning" so you need plenty of room to cast.
.Excuse yourself for these very bad cast, and ask for their understanding and forgivness.
Then ask them what time it is ,cause you have to take your Prosac medicine,and your other friends will be joining you to fish soon.
Continue to cast and screw things up till either you can no longer hold your laughter or they leave.
He said it worked every time.