I put 50m of calibrated 10mm on our 36 Classic.
Anchoring in 10m or less is more than enough depth for me in the south west. To be fair I don’t like being in much more than 5.
The 35m that I replaced is still on board just in case of emergency and could be attached.
never had need for any warp.
be prepared to mark it at sensible lengths to make sure you always have the right amount out and your stay put in most situations.