Minnie tells Starsky & Hutch that they first must draw a circle around themselves and kiss the bag 3 times. They never do it.
This takes place on the Caribbean but---when Starsky and Hutch are riding from the airport to the hotel---one can clearly tell they're in Hawaii due to the very green mountain range behind them.
The stuntman doubling for Paul Picerni can be seen jumping into the air just before he's hit by a car. The angle used for the next shot would have worked better, obscuring the jump.
When Starsky and Hutch are riding from the airport to the hotel, Hutch's hair is moving wildly in the wind of the open vehicle, except for his bangs, which are strangely plastered flat on his forehead. David Soul was, at the time, losing his hair, and the stylist fixed it so as to hide his incipient balding.
Voodoo masters in the Caribbean where this title takes place (typically Haiti) do not play the Native American flute, which Papa Theodore is seen playing.