So, I was looking at some rocket designs incorporating the LES, which made me think "I've never used this," which made me think "that's because I normally just revert in a disaster," which made me think "successful launches would be much more satisfying against a backdrop of consistent failure." So I'm going to start a career on Hard. Other than keeping an eye on my dV/TWR during launch (I have installed Kerbal Engineer) and trying to complete multiple contracts at a time where possible, what are some techniques I can employ to optimise my performance in Hard mode? In particular, what is a good way of escaping the habit of launching multiple suborbital test flights before committing to a specific design (do I try and launch unmanned rockets first for each new design... or do I just need to be more thorough when designing in the first place)? (not sure if this is the best place for this thread since it isn't really an "answerable" question).