Edit 02/02/2022: Updated to standardize formats and style, and made some other minor visual improvements. Provided a version with and without the rowboats, and updated the boat tokens you can download here. There's no UVTT file for this map, since there are no walls, and I had to export it at 160px to account for how long the map is.
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Edit 11/01/2022:
Some time after making this map, I actually came back and made more detailed boat tokens for Bluto and the players. For whatever reason, I didn't think to link those boat tokens from here, so I'm doing it now! You can find them here.
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Original Post:
You can download all my maps for free here, and you can find this specific set here.
Coming back to Lake Zarovich for the encounter with Bluto and the race across the waves, I have once again made a version of the map without rowboats, as well as a token you can use for the rowboats on your VTT.
My maps are made with assets from Forgotten Adventures (note also that the rowboat token is taken from their catalogue), Tom Cartos, and AoA, and they come with grid/gridless, day/night, PNG/UVTT, and full-size/70 pixels per square size variants.