Look up CORE Industries blanks. They have red, blue and green versions, I think. Got a custom 6'3" T&C Sidewinder 34L in Core Green blank with S cloth and the difference in weight and strength between it and my off the shelf 6'4" T&C flux 36L is mind blowing. The Sidewinder is an absolute rocket!
For various reasons I want a board made light while still maintaining reasonable strength. So what I’d like to know is board weight variation only in the weigh if the cloth and glass job or do blanks come in a variety of weights?