The IFS and MAST ask that anglers do not place rocks to step on to the floating pontoons at yingina/Great Lake or Arthurs Lake.
The pontoons slide on the anchor cables – if there is a gap between the pontoon and the shore simply slide the pontoon back to shore.
Placing rocks stops the pontoon from sliding and can damage the cables and chains under the pontoons when the lake level rises.
Source: https://www.ifs.tas.gov.au/news/2019/may/22/important-notice-do-not-obstruct-floating-pontoons