The marine specific industry is where I would look.
There are some thixotropic products that come in a tube (like for caulking gun).
Product called Silverthane might come in clear.
West Marine, System Three are two companies.
Jamestown Distributors is also good.
Various clear epoxies that are truly clear and colorless are on the market these days.
One last product Weldbond. It dries clear and cleans up with water. Pretty highly regarded according to some YouTube guys who have compared wood glues.
I guess Weldbond could have been my first suggestion.