I was a little concerned that the PA fishfinder plate would only accept Lowrance transducers.
For those of you that have Humminbird FF, The Hobie Adapter Kit is part number 84505901 - Mounts right to the plate with no problem very simple install
I'm sure you can find it online or be ordered by your local dealer... I was able to pick mine up for $8.19http://www.austinkayak.com/products/12197/Hobie-Pro-Angler-Fishfinder-Adapter-Kit-for-Humminbird.html
Then you just follow the instructions in this video to install the systemhttp://www.youtube.com/watch?v=7-zDrsLfz-M