Which type of fork should I buy?

Here’s my context. I live in rural Haiti working on land restoration. It’s very hard to import anything. Right now it means bringing it in on a bus through the Dominican Republic then crossing some of Haiti on motorbikes and finally hiking half an hour. Nonetheless, given our project we want a fork that someone can bring in next time they’re coming in from US, which we actually do fairly often. To make transport easier we would plan to remove any wooden handle and replace that here.

What we need it for is loosening compacted soil, starting new beds, digging up root veggies, aerating soil, and turning compost. So far we’ve made do with shovels but the aerating is not so easy with a shovel which makes me lean toward a broad fork. That said, if we get a more general fork, I’m sure it will be used a lot.

Any suggestions? We could possibly have one welded out of rebar but I suspect that would suck and not hold up well. Our experience with welders here has been quite frustrating so far.