I use GEE BEE floats. You can get them at TowerHobbies.com
http://www2.towerhobbies.com/cgi-bin...1&I=LXJ290&P=7
You can use their aluminum braces or two sets of standard landing gear.
Ernst makes a great water rudder. I got mine at
www.horizonhobby.com
Have fun it’s a blast!!