8 different bubbler systems from $555 - $1,175, 3 different pump options. Much lower energy than agitators that also disrupt the ecosystem and often open too much ice. Bubblers open the ice just around your dock perimeter, with the submerged bubbler lines around the dock.
See the website Dockbubblers.com or YouTube channel
https://youtube.com/@Dockbubblers?si=U4iuUP94Prm0_7lx