Why does my 34L board turn so slowly?

[Solent Foiler]

It's something that I've noticed for a while but can't figure out why. Using the same foil on my 65L 4'6 and 34L 5'3, the turning is so much slower on the smaller board. Not just a little bit, but like I'm using a stab that's way too wide, almost hurting my feet in the straps muscling the board around... I don't get it.

I've resorted to using smaller stabs in the past to loosen it up, but I've only got one Axis stab at the moment - waiting for 375 to arrive although I might well need a 350.

The only thing working against the small board from a turning perspective is the additional length, but I can't believe that is the issue. The swing weight difference must be marginal between the two. The other big difference is the thickness between the two, with the small board being much thinner. Is that the cause of it??? Just to finally say, the mast feels like it's in the same relative position on the two boards - lift is similar.

[Dwight (DW)]

It’s length. I’ve made every combination of length and width. Length is the enemy and width is your friend.