Golf Ball Diver
You work alone on golf courses pulling submerged golf balls by hand or with simple equipment, then clean and resell them for $0.10-0.25 each. Sounds simple because it is. Some guys turn this into a $30,000-40,000/year operation by hitting multiple courses and building buyer networks.
Golf ball diving is exactly what it sounds like: you wade or dive into ponds, water hazards, and lakes on golf courses to recover lost balls. The work is wet, repetitive, and seasonal. Most divers work spring through fall when courses are busy and hazards are fullest. You show up early morning or late afternoon when play is lightest, and you work alone. Some days you pull 500 balls. Some days you pull 100. The course may provide permission and access, or you negotiate it yourself. The physical demand is moderate to heavy depending on water depth and bottom conditions. Temperature matters. Cold water in early spring and late fall will wear on you fast.
Your day starts by getting permission from the course pro shop or groundskeeper, if you haven't already locked in an arrangement. You walk the course identifying which hazards are accessible and likely to hold lost balls. You wade in, feel along the bottom with your hands or feet, and grab balls as you find them. In deeper water or murky conditions, you use a net or strainer on a pole. Once you've worked a hazard dry, you move to the next. You pull the balls back to your work area, usually a bucket or wagon. Then you rinse them with a pressure washer or garden hose, sort them by brand and condition, and store them dry. Better balls get placed in separate piles. Damaged ones might still sell, depending on the buyer. On bigger days you're also loading balls into bins, negotiating prices with buyers, and planning which courses to hit next based on water levels and course traffic.
You need to be comfortable working alone and in water for hours. You should be self-motivated enough to track which courses have inventory, negotiate with management, and find your own buyers. Physical comfort with repetition and cold water is a real skill here. Guys who succeed treat it like a business, not a casual side gig. You also need to be willing to start slow and reinvest early profits into equipment that lets you scale.
There is no certification or trade school. You need access to courses and a willingness to get wet. Start by approaching your local municipal or public golf courses. Talk to the pro shop or grounds manager. Many courses will give you permission to dive specific hazards on a percentage split (you get 60-80 percent of what you sell, course gets the rest). Some may want a flat fee. Bring a simple net, bucket, and pressure washer setup. Craigslist, eBay, golf ball resellers, and pro shops are your buyers. Some guys start with one course and add 2-3 more within the first season. Expect to start making real money (not just gas money) in month two or three, once you know the courses and have buyer contacts locked in.
Your knees and back will take a beating from constant bending, crouching, and wading. Cold water in spring and fall can lead to joint pain that sticks around. You are also heavily dependent on course management, which means you have zero control over access if a new super says no. Golf ball prices fluctuate based on market supply and demand. A glut of divers in your area or a flood of recovered balls can tank prices fast. Weather ruins entire weeks: rain makes hazards overflow and visibility disappear, drought dries up some hazards completely. And honestly, some courses will try to undercut you on splits or change terms mid-season. You need a contract or clear understanding in writing.