AOB is quite easy to visualize and estimate just by looking.
With some practice, it should become like riding a bicycle !
RAOBF and stuff is existing in most mega mods (SH3/4/5), but for info, RAOBF wheel was not used in WW2 by Germans...only in WW1 of what I’ve readed.
Attack disc were probably used instead.
US side, i don’t know...but i don’t think they used RAOBF wheels either.
Correct me if I’m wrong