For me it is very simple to manage potential losses during a crash and it is I believe the control of emotions. We should admit that there are a lot of people that do panic selling during this scenario which we all know a bad doing or decision. If you can only do a emotional control during crash you will surely avoid a un necessary losses. If you have faith and truly trust the process you will not be carried away and will stick with your plans or goals. In short we need to manage our emotions so that we will be safe during crash.