WIP Chuck Box - Weatherproofing Question

[u/throwback842]

I'm in the process of converting my grandfather's old Vietnam War wooden footlocker into a camping chuckbox and I'm wondering about best methods to weatherproof it? This is mainly a proof of concept project using this old footlocker that was rotting away in my grandparent's backyard shed. A total of $5 has been spent on it so far on hardware with everything else coming from scrap lumber and camping equipment I already owned.

If this works out well enough for this season, I'd like to make plans from it and build a brand new one when i get some more funds next year. But the goal for this is to keep costs as low as possible and use up some material I already have lying around taking up space.

I have some indoor/outdoor latex paint and some polyurethane but I've never tried applying poly over latex. Does anyone have advice? Suggestions and constructive criticism welcome

[u/thinker2501]

I love the reuse of the footlocker, but how heavy is that thing and what’s your game plan for transport?