Risers come in 2 different heights to allow your deck to sit higher off of the water (avoiding splash).
Expandacraft canoe adapter kit attaches the cross tubes to almost any canoe gunnel. The basic idea is to clamp the two 1/4 inch thick Starboard plates on either side of the canoe to spread the shock load and stress to a larger area. This connector kit is $50 per kit (two sets, 1 for each side of the canoe). You will need 1 kit for every 2 attachment points on the canoe. Includes all the stainless bolts and the aluminum mounting bracket. Each canoe is slightly different, so you will still have to drill some holes, and cut the extra length off the bolts with a hacksaw. The outrigger kit itself is not included.
One aluminum deck plank with end caps made of marine plywood (Starboard). Strong, durable, won’t rust. Extremely lightweight.