What model Shrike did you choose?
The kayak is the standard shrike. You can see more about it here http://www.evandropacheco.com/

What modifications, if any, did you make to the design described in the Build Manual?
I added the marquetry to add to its beauty and make it look exclusive.

What is the weight of the finished kayak?
The Weight was around 23kg, it was more because of the marquetry that I made.

How does the kayak perform on the water?
I enjoyed the kayak, it is excellent.