To use the strategy look up all viable ways to play an initial hand on the following list and elect that which is highest on the list.

0 deuces

1. 4,5 to a royal flush
2. Any pat paying hand
3. 4 to a straight flush
4. 3 to a royal flush
5. Pair
6. 4 to a flush
7. 4 to an outside straight
8. 3 to a straight flush
9. 4 to an inside straight, except missing deuce
10. 2 to a royal flush, J,Q high

1 deuce

1. Any pat four of a kind or higher
2. 4 to a royal flush
3. Full house
4. 4 to a straight flush with 3 consecutive singletons, 5-7 or higher
5. 3 of a kind, straight, or flush
6. All other 4 to a straight flush
7. 3 to a royal flush
8. 3 to a straight flush with 2 consecutive singletons, 6-7 or higher
9. deuce only

2 deuces

1. Any pat four of a kind or higher
2. 4 to a royal flush
3. 4 to a straight flush with 2 consecutive singletons, 6-7 or higher
4. 2 deuces only

3 deuces

1. Pat royal flush
2. 3 deuces only

4 deuces

1. 4 deuces

Terms:

Outside straight: An open ended straight that can be completed at either end, such as the cards 7,8,9,10.

Inside straight: A straight with a missing inside card, such as the cards 6,7,9,10. In addition A,2,3,4 and J,Q,K,A also count as inside straights because they are at an extreme end.

Any hand that does not appear on the above lists should never be played. Most notably a two pair, keeping a single pair has a higher expected value.

Example: Suppose you have the following hand.

The top two plays are (1) keep the pat flush, and (2) keep the 4 to a straight flush. The 4 to a straight flush consists of 3 consecutive singletons with a range of 5-7 or greater. This appears higher on the list than a pat flush, and is thus the better play. 

Comparison to Optimal Strategy

The following table compares the probability and return of each hand under both the simple strategy and the optimal strategy.

The next table is a frequency distribution of the error, or difference in expected return, between the simple strategy and the optimal strategy.