A parlay is very simple. You just "let it ride." Make a bet, and then leave the winnings there to ride on the next bet.

This does not have to be the whole amount. There is a method around called "31" where you have a series which is 1 1 1 2 2 4 4 8 8 (for a total of 31 units). Your first bet is one unit. This could be any bet from a dollar to 1/16 of the table limit. It is 1/16 and not 1/8 because you must parlay the 8 units. If that bet wins, you bet the same amount again. If it loses you go up the series with a parlay on each bet. Notice that if you win any of the parlays you will be winning anyplace from one to nine units.