I don't trade shares per se but instead use my spread betting account even if I hold shares for months or (maybe) years. As BoE interest rate is so low, overnight charges are tiny.
I currently have £100/point on RBS... which is the same as having 10,000 RBS shares. I have a 50% leverage as well.
My guess is to drop them at 11p or run profit till they hit over 30p.