Sounds like you found a viable plan.
It’s a plan. Now to see if it’s viable. I’m surprised there aren’t more sidemount shore divers with longer hikes out.
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Sounds like you found a viable plan.
Maybe @MAKO Spearguns will chime on capacity of their
Inflatable Dive Board: https://www.makospearguns.com/Inflatable-Dive-Board-p/midb.htm
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I do see rings in either side that you might be able to clip into for in-water towing of the tanks if there is not enough size/buoyancy for on top.
I’m surprised there aren’t more sidemount shore divers with longer hikes out.