Strip planking is popular amongst canoe builders. A 1/4inch thick core of cedar has fiberglass on either side. The glass provides tensile strength and the wood provides both compression strength and a useful offset between the fiber layers.
I can lift the bare hull of an 18 foot long sailing canoe with one hand.
The downside is in maintenance/repairs, and the critical requirement to keep through holes absolutely watertight. If water gets into the core it's a total PITA
Also, strips of cedar that are 3/4" by 1/4" by 18' are really weird to handle.
Snowboards are kinda similar with usually having a wooden core for tensile strength with plastic bottom for gliding, plastic top for protecting the wood and metal edges to cut into snow/ice.
Get a hole all the way to the wood (usually by hitting some rocks on the rather soft/porous plastic bottom) without keeping it dry and patching quickly will destroy the board very fast.
Also modern boards have multiple different kinds of wood in fancy layers/placements inside to give the correct amount of "pop" in the correct spots for the wanted ride. Some of the more expensive/extreme boards have started to replace parts of the wood core with carbon fiber in the cases where weight is very important and a very stiff board is preferred (mainly backcountry/split boards)
I can lift the bare hull of an 18 foot long sailing canoe with one hand.
The downside is in maintenance/repairs, and the critical requirement to keep through holes absolutely watertight. If water gets into the core it's a total PITA
Also, strips of cedar that are 3/4" by 1/4" by 18' are really weird to handle.