Let It Ride - Strategy and House Edge

Like blackjack and video poker, player decisions in this game affect the house edge. The strategy outlined below assumes the standard payout structure shown above. With correct strategy, the casino's edge in Let It Ride is about 3.5%.

When deciding whether or not to let bet (1) ride, you should pull your bet back unless you have one of the following:

Any paying hand. (A pair of tens or better.)
Any three cards to a royal flush.
Any three suited connectors where the lowest card is three or above.
Three to a straight flush, spread four, with at least one card that's ten or higher.
Three to a straight flush, spread five, with at least two cards ten or higher.

When deciding whether or not to let bet (2) ride, you should pull your bet back unless you have one of the following:

Any paying hand. (A pair of tens or better.)
Any four to a flush.
Any four to an outside straight.
Any four to an inside straight, if the four cards are ten or higher.

An outside straight is a draw to a straight that can be completed by two different cards, like 4-5-6-7. Any 3 and any 8 will complete the straight. There are eight cards in the deck that will complete an outside straight draw.

An inside straight is a draw to a straight that can only be completed by one specific card, like 4-5-6-8. Any 7 will complete the straight. There are only four cards in the deck that will complete an inside straight draw.

From Wikipedia's

Let It Ride