All I can add is practical experience, played today for 4 hrs on 5 play, playing some 9/6 JB, ugly deuces, and 9/6 ddb. Got all the bingos except 1 set of aces and one of deuces, got a royal, but none of the 4 needed straight flushes in any suit.
Last month did the bingo card once and played for about 4 days, 4-6 hrs a day, on 5 play, and it took that long to get the 1 heart straight flush...got 2 royals during that time.....it seemed easier to get a royal than a straight flush.
Be prepared for grueling play looking for these straight flushes.....
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