Actually shields have zero effect against SRV terrain collisions so you always want 4 pips to engines when doing SRV extreme sports to keep the amount of boost you have maximised. Surviving a long drop is all about making sure you have plenty of hull to start with, landing nice and level and facing the direction of travel, and timing your final full boost so you very nearly run out just as you hit the ground. You might want to save a tiny bit of boost to deal with whatever happens next and, before attempting any SRV extreme sport, you should always have repair synthesis pre-selectd in the right-hand panel before you start.