Nairn & Portnoo prior to the modifications done in 2004-06 was the most genuine out-and-back layout I'd ever played. Each hole on the outward half brought you farther away from the clubhouse. The turn was at the 10th tee (perfect out-and-back) and each hole on the homeward nine brought you you closer to the clubhouse. In addition, the strip of land was only wide enough for a fairway in each direction.
There are two kinks on the back nine of the present layout, and the turn is now at the 9th tee.