In an obvious attempt to get back on topic, I would suggest the MOST important act a cruiser can perform to maximize the chances he won't be denied entry by Customs officials anywhere is to make absolutely certain that there is no contraband of ANY description aboard their vessel. This is not only confined to drugs but also firearms, plants, animals
or any other substances that are prohibited by the country you are trying to enter. It is the skippers' responsibilty to know in advance what the particular laws and regulations
of the country the vessel is entering are and to ensure the boat and his crew abide by the rules.
My biggest problem/concerns on doing international deliveries were whether or not the owner had secreted something aboard on the ship I was delivering or having a crew member
try and bring a prohibited substance into the country. While Immigration normally dealt with the latter, the fact that a prohibited substance or article was aboard the vessel for which I was responsible would cause no end of problems with Customs and could cause the boat to be turned around at best or siezed and fines, detention and possible loss of license
It is not a laughing matter and you may be lucky to be just a little inconvenienced. Having experienced both irresponsible owners and crew in the past, I speak from personal experience. Forewarned is forearmed... Capt Phil