i cheated SO MUCH at monopoly
i'd use two main cheats
1. the tap-while-moving illusion. if you TAP the car against the board, while moving it, youll easily trick everyone watching.
if the dice says 5
and you want to move it to a lot 6 squares away, simply move it to that lot, but TAP it 5 times against the lot, as if your counting it loudly to make sure they all know your not cheating
"1-2-3-4-5! There!" <-6 lots away
if they catch you, just giggle it away "aw you gots me
"
2. the change-money-scam. sort your money. its a bit more suspect, but be open, quick, nonchalant and "transparent" about it, as in, dont HIDE what your doing, do it in full view:
4 bills turn into a 5'er - consistently
over time, youll be rich, rich, riiich!