Thank you for that Bruce. I appreciate your expertise in this matter."Would the BFV8 have the same characteristics if it were lighter?"
Weight doesn't change the Physics going on with the Design............ with ANY design.
The Dynamics that a Surfboard experiences is consistent to that Design while the Perception of the Ride is experienced by the Rider.
Of course, a much lighter board will feel more responsive most likely becuz the exertion of weight from the rider is more acutely 'felt' by the board as it is being navigated. So the Rider would say,
"the lighter version is easier to turn".
Another Rider might state,
"I like the heavier version because it has more Glide & Carries more Momentum thru dead spots."
In this sense, both Riders assertions are valid, but the Design stays True as to whether it Goes to Rail Well, has Blazing Straight Line Trim Speed,
and Paddles Well and offers early Entry........ albeit, a super light version WILL Pop Up & also Drop Off a Plane quicker.