Most DIY backyard holes fail for one reason: people build the obstacle first and the cup placement second.

Real mini golf courses (the good ones) start with the cup. The green is built to funnel toward it — every slope, wall, and bump exists to serve that one point. When you flip that process and design the obstacle first, you end up fighting your own break, and the ball never rolls true.

A few things we've learned building backyard setups:

• Anchor the cup on the flattest ground you have. A tilted cup ruins every putt no matter how good the rest of the hole looks.

• Slope toward the cup from at least two directions. A single straight lane gets boring fast — real courses use subtle cross-slopes to make the last few feet interesting.

• Test roll speed before you commit to a layout. Grass, turf, and concrete all play differently, and a ramp that works on turf will die on grass.

• Keep your first hole simple. The best backyard courses start with one great hole, not five mediocre ones. Nail the fundamentals, then expand.

We built the Mini Golf Gear Bundle (putter, official balls, portable cup, rules card) specifically so people could test this stuff in an afternoon instead of guessing with random hardware store parts. If you're building a backyard course, start with the cup — everything else follows from there.