I would guess one strategy to follow would be - Orbit Mun at some calculated altitude - Use liquid rockets to reduce orbital velocity to 0, and hover - Hover as precisely as possible at this calculated altitude - Cut off liquid engines and drop down - Ignite SRB at precisely computed height - Make sure the pod is controllable enough to remain perfectly upright - Win. I don't know offhand how difficult it will be to compute the height...well, for x being the altitude, we have something like d^2x/dt^2 = -m(t)F_g(x) + m(t)F_r(t) where F_g is the gravitational force which depends on altitude, F_r is the SRB thrust and the dependence on time comes from the time of ignition (it is a step function that is zero at all times except when it is the constant thrust produced by the SRB when it is burning), the target condition is x=0,dx/dt = 0 and F_r(t) = 0 at x = 0, so then integrate backwards for the duration of time the SRB burns for, and this will give the required vertical velocity at the altitude when the SRB should be lit. Then, work out how long a freefall (from orbital hovering) is required to arrive at this altitude with the correct velocity. It would make sense to do something like aim for a landing velocity of dx/dt = -5m/s or something so that there is a bit of leeway, as long as the lander was designed to sustain a -10m/s impact or something.