Bar to Whip| Front or Back foot kick

[Vito]

I've seen different options: some kick with the back foot some with the front.
I kick whip with the back foot, but I can't do then off low ledges, maybe it's just because I'm not that great at them yet, but as I recall I've mostly seen people doing flat Bar to whips or off low obstacles taking the back foot off a deck and leading it a bit in the direction of whip with the front one while barspin and then kick.
Is it a better way? or it doesn't make a difference, it's just practice?
Which way do you do them?

 

[Bjorn]

primerally the front foot i think, but look better if you kick with both

 

[Scott Freibaum]

I personally kick with both.

 

[J SWEETS]

When I do em off this like one and a half foot ledge at my school I kick both.
Its easier to me.

 

[Victor C.]

for me front. I'm not very good at them though

 

[Mikey G]

Whenever i try them at the park I kick em front foot cause i always try to get my back foot out to catch the whip