: This is how to "legally" obtain the exact measurement information:
: "Customers who purchased the Rudder Plans or the Rudder mechanism Kit
: can take advantage of the FREE On-line Manual that shows the entire
: construction procedure in the minutest detail and in 136 photos and large
: close-ups.
: The manual shows carbon fiber, fiberglass and epoxy lay-up and making the
: rudder using the plan templates. All shaping, drilling and assembly of all
: remaining parts is described and illustrated in the manual as well. The
: mounting of this rudder to a kayak is shown in the Kayak Shop pages. All
: composite components are illustrated in the Rudder Construction
: Intro."

: Glen in Baie-St-Paul.

I did purchase the kit and have access to the on line manual, have read it many times actually. The bracket does not come with the kit and no mention of it's dimensions are made in the on line manual. I have not however looked that closely at the kayak shop pages you mentioned. Maybe there is something there.