i will always make a good strategy for my trading and will only risk 5% of my deposit and avoid losses....but if sometimes i take more risk , then i will apply stop loss to my open trades and will try to close all my positions and avoid further losses....i think that it is not good deposit more money, because if that spike moves too much against your open positions, then it can blow up your new deposit as well....so it wise that first we close all the positions and accept the losses and then make a new deposit and start trading....