We were forced to replace our mast blocks this year because the previous ones were stolen. After using the new hardware, we observed a drastic improvement in the mast systems, indicating significant potential for further optimization. Our turning blocks (non-ball bearing in OEM location) on the cabin roof (on our MkI) are now candidates for update or replacement, and we have begun discussing various what-if scenarios for the upcoming off-season.

I have been reviewing older forum archives regarding modifications to deck organizer and turning block layouts. The goal is to reconfigure the line geometry and reduce friction for the rigging running from the mast back to the cockpit.

A few vessels,  Catalinas, in our local marina feature modified running rigging layouts/geometry completed by prior owners. These configurations successfully improve performance, but the current owners, including several friends here, do not have the design notes or knowledge of the factory configurations and changes to explain why specific placement choices were made (e.g., 3 of the same model boat, 3 different post-OEM configs); they bought their boats post-reconfiguration.
Could you please share your experiences with redesigning and relocating your deck organizers or cabin roof turning blocks? I am seeking hindsight recommendations based on your actual installation and multi-season usage to help shape our off-season plans.

If you were to perform the geometry reconfiguration again, what specific modifications or adjustments would you make to your current layout?

Thank you in advance.