MEP spins
No advice worthy of the name. In my experience the theory's one thing but the variables between individual aeroplanes, and the large number of factors that affect spinning characteristics in addition to B/A ratios, means that it's difficult to predict anything from a first principles look. For example, when I was at Boscombe Down in UK I did loads of spinning in the Hunters they had there, specifically configured for spinning. There were 4 aircraft - 2 two-seaters and 2 single-seaters and every spin (left, right, erect or inverted) was different, although in theory they should have been similar.