Thank you for the compliment. To answer your question the dealer will just ask you what you want to do. Normally all decisions in blackjack must be visible, however this is the only exception I can think of. However if you want to avoid being asked when it is your turn simply hold up you index finger to denote that you want one card. Most dealers know what this means. Coincidentally I just learned yesterday that in Bulgaria if you wish to double you put your extra bet behind the original bet, and if you want to split you put it next to the original bet.
Another reader wrote in to state that in North Dakota it is the state law to follow the Bulgarian rule for doubling and splitting.