Identify the exact limitation
Be specific. Is the board difficult to redirect, too slow in the waves you surf, unstable at speed or hard to fit into steeper sections? A vague feeling of being ready for more is not enough to guide a purchase.
Check the repeatability
A real equipment limit appears repeatedly when conditions are appropriate. If the problem happens mainly when you are late, tired or poorly positioned, the board may not be the main cause.
Use outside observation
Video and coaching can reveal whether the board is resisting a correct movement or whether the movement is incomplete. This is often cheaper and more accurate than changing boards based on feel alone.
Test a controlled alternative
Demo a board that changes only a few relevant characteristics. If the new board improves the target problem while keeping wave count and control, the evidence for changing becomes stronger.