I'd like to 'play' with V1 cuts under various conditions
more strength to you, good sir ... the main constraint is dollars ... at the end of the day someone ends up paying for the extra time ... but most of us manage to cheat a bit with the assistance of kind hearted sim techs ..
I always liked to find time on endorsement programs to get the guys and gals comfortable with min V1 aft cg cuts with a requirement to backtrack out along the opposite LLZ for initial climb .. worked up progressively most had no real problem.
The other thing to keep firmly in mind is fidelity .. the particular sim may, or may not, represent the aeroplane's dynamics well. However, provided that the dance appears reasonable there is a generic confidence building benefit to be had ...
As I said to one SAA crew some years ago ... "ok, chaps .. time to call it quits .. that's about as difficult as I can make it for you ..." .. the boys were a bit sweaty but with grins from ear to ear ... sitting in the back, one gets a real buzz when the folks up front
(a) improve
(b) do well
(c) enjoy