The owners manual says:
“The anchor recess is moulded to take a 35 lb C.Q.R.”
We’ve done it, and it fits nicely. But we find the 35 lb CQR to be a little undersized.
You might consider a folding danforth type, such as the Fortress FX-23. Not that it fits nicely in the locker, but it is easy to disassemble and stow below, or it can be secured to the pushpit.
We actually carry 3 anchors, 2 plow types: Manson Supreme 35lb primary, 45 lb CQR (not 35 lb); and the Fortress FX-23, which is great in sand.
Marilyn