The coating on a maple board may be a factor.
Although it's not good to generalize, polyester is typically a softer resin system than epoxy. Properly cured CA glue is also harder than poly.
If the board has a factory polyester coating and it's a thick film, that will inhibit mwah.
But as mentioned previously, some fretlesses just aren't mwah machines.
I have an early 80's unlined G&L L2000E with an ebony board and it is all meat and muscle, no mwah.
Some say that maple isn't a good choice for mwah, but I've heard players get good mwah from a fretless maple board.
Although it's not good to generalize, polyester is typically a softer resin system than epoxy. Properly cured CA glue is also harder than poly.
If the board has a factory polyester coating and it's a thick film, that will inhibit mwah.
But as mentioned previously, some fretlesses just aren't mwah machines.
I have an early 80's unlined G&L L2000E with an ebony board and it is all meat and muscle, no mwah.
Some say that maple isn't a good choice for mwah, but I've heard players get good mwah from a fretless maple board.