Boilerup..There are a lot of good links on this site for dock ideas. One thing to keep in mind is how much you think your water level is going to change during the year. Especially during the summer when you may want to use it the most. If your pond's level will vary by more than 4-6', then a fixed pier & a floating dock maybe the ticket. There are some pictures here of sadly low pond levels with a pier setting some 10-12' above water level, essentially making the pier unusable until it fills back up..du
