I can only speak from having flown my first KR, no flaps or brake, and having been around the KR crowd for over 20 years. If I were to add a device for that purpose, it would be the brake. The KR has all the lift it needs when it get's into ground effect (let's not go there again, please). Flaps generate lift that you don't need. I also think that the brake is much more simple to install and maintain.
However, as you already know, your results will vary. See you in Mt. Vernon - 2005 - KR Gathering See N64KR at http://KR-Builder.org - Then click on the pics There is a time for building and a time for FLYING and the time for building has expired. Daniel R. Heath - Columbia, SC -------Original Message------- flaps or ar brake?