Thanks for the info and great pics. I plan on going with the fixed, permanent style dock. Blaine, I like the layout of your dock pictured. I was thinking of a "T" shape design using 8" or 10" cardboard cores and filling with quickrete as the posts.
Blaine, where did you get the electric poles? By the way, I live in Southeast Indiana (Dearborn Co.) Your pond looks familiar...I used to deliver fish though, so a lot of ponds look familiar to me!!

Thanks