Anson PH829 in 1958 from Renfrew upto top of Loch Lomond then down the length of the Loch skimming the surface and skipping over the islamds.
This summer did a similar trip in Loch Lomond Seaplanes Cessna 208 G-MDJE.
This time the pilot stayed at a respectable height.
If anyone is visiting Scotland next summer this is your chance to sample a take off from the Clyde just downriver from Glasgow city centre.