I did this to my t26 3 years ago. . .

Much better! No large gap between the rudders and the stems now, and no surprises from stainless steel fatigue.

As is general in this discussion, mine also look great after 10 years, and you can change them anytime though, just by jumping into the water. just take a UV resistant material and make sure (same as Ron suggest)  that when you bore the holes , made them larger and fill them with epoxy so later you can make a smaller diameter hole to fit the rope, in my case the rope is 8mm not sure what kind of rope is it, it came with the boat.... i was painting the boat this year, and I took extra care with the rudder lashes and covered all with 3M 4200 sealant and then 3 or 4 layers of antifouling to avoid the barnicles... i guess you know all this already but repeat it wont hurt. one more detail..... the rudder itself has a foot that rest in a plastic pad , the white type (i think is Delrin but not sure) that is used as guides in other industries  and has high abrasion resistance.. that foot makes that the rudder weight act in that point and not transferred to the lashings....

Many thanks Kim for the excellent photographs and Alex for your comment s and advice.  It is all  good news.

Don