Boleo can happen on either foot.
Up and faster Boleo: From a Lady's RF to side, Lady will feel the increased tone and connection in hand and a little wind up to her R before turning to L
Lady's LF keeps on the ground, drawing a circle, hip over turn a bit, then Lady's feels a quick twist of hip, that's when she will whip the LF (keep center to Man).
After whip keep L knee tucked while turning hip to R before pointing L leg fwd so it doesn't hit Man (Man will point his leg)
Make sure to not push Man in the R arm. (especially when coming back turning and pointing Lady's L leg) Move hip and point without affecting arm.
Down and slower Boleo:
After Lady's RF side step, Man leads her to get lower onto the bent R knee, using inside edge of LF draw big circle on the ground, turn hip to L, L leg goes back, fairly straight, open hip, body quite twist (keeping center to Man).
Then, bend L knee to come through and up (no flicking LF on this slower Boleo, Man does not lead the 'tick' which is the lead for flick). L leg draw a vertical circle (bicycle) in front, scoop (out, up and in), before stepping LF out, collect, resolution
Start from side step pos 2: Lady RF to side. Lady will feel tension, Man pre-lead by preparing wind to her R a bit, and he will keep Lady's weight on her RF and twist, that's when Lady does Boleo.
Lady does not react (kick foot) right away, Lady twist around the standing (R leg) (not twisting around belly center) to L and very last second flick her LF