Installing Foot Braces for Aire IK - Advice?

I just did this recently and it is easy. I recommend you have a new or like new 1/4" punch for making clean cuts through the fabric.

First locate the seat where you think it should be. Which, is probably near the center of the boat for stability, driving and spinning ability, and to offset gear weight if added to the stern. You're location will also take into account the leg room of the usual occupant.

Second, adjust the foot pegs to their center setting on the slide bars. That way you will have room to accommodate different size occupants and/or some relocation of the seat position if ever desired (perhaps to better balance for gear weight in the stern or heavier/lighter or taller/shorter persons). Then, with the usual occupant sitting in the boat solidly back in the seat have the person position their legs with knees bent and flared outward in a suitable boating position. Then locate the foot brace brackets against the bottom of the feet and at the height on the foot desired. Use a sharpie to mark the outer edges of the brackets on the tubes. Measure how far inward the bolt hole is on the bracket and then measure and mark that location on the tubes. You can then use the long material with three holes in it from the kit to assist with locating and marking the other two holes for each bracket. Go slow to go fast and make sure you have the desired locations properly marked with round sharpie marks on the tubes.

Next, deflate the tubes and unzip them open. Push the bladder out of the way to allow for a short 2"x4" wood block to be laid on the inside of the open tube behind where you will be punching each foot brace mounting hole. Again, go slow and give attention to the protection of the bladders and care of the outer tube fabric.

One hole at a time, with the wood block inside the tube, you will fold the tube fabric over the block and hammer your punch through from the outside of the fabric at your sharpie hole locations. Try to get a good clean (level) punch through the fabric at each hole. Then assemble per the instructions.

Do one side at a time. Measure and re-measure as you go to make certain you are confident in your process. It I not hard and is quite easy to do. You should be very happy with your results.

Happy boating!

I would definitely second what Zack said about adding a second layer, and AIRE gives you the long hot-dog shaped piece (the "punching block) which works perfect for this purpose. Use a plastic meat cutting board for punching. Ken's guidelines are all excellent too.

The AIRE instructions don't really tell you to install a second layer, but in my mind a prime reason for adding footpegs to a boat in the first place is to have a brace when you go over larger vertical drops. And if a 200 pound paddler puts 2 G-force's worth of torque on them at the bottom of a drop, having those bolt holes tear is more likely if you don't have the extra layer.
On AIRE's Lynx I, there is already a piece welded in with three tick marks for the hole punch, but other models don't have these. Not sure which kayaks you have?
One time I found a whole set of punches from 1/8" up to 3/4" at a flea market for about $20, but often you end up paying more than that for just one at True Value or Homeboy Depot, so if you have time check Ebay or Amazon.