Watch the Strum Pattern #2 Play-along online guitar lesson by Marcy Marxer from Swingin' Rhythm Handbook
The second strum may sound unusual. Here we flip the 'chunk' to the 1st and 3rd beats. This is the strum that will really SWING with a bass player playing on the 1st and 3rd beats.
This strum provides tons of drive at fast tempos and you'll give the bass player a feeling of support and freedom.