Steady in the Single
"Relax." "Engage your core." "Sit up tall." If you have asked why you cannot balance a single, that is the advice you got, and none of it is a diagnosis. It is the sculling equivalent of telling someone whose car pulls left to hold the wheel straighter.
A single rolls for a small number of findable reasons, and this guide works through them in the order that fixes them fastest. You start by working out when in the stroke you lose it, because catch, finish and recovery each point to a different cause. Then you spend fifteen minutes on the rack with a tape measure - because roughly one club single in three is rigged unevenly, and if one oarlock sits 10mm low the boat will tip for anybody, no matter how much you drill. Only then do you work the six-outing drill ladder, from sitting still with the blades flat through to square-blade rowing.
Inside: a fault-to-cause index you can print and take to the boathouse, the full rack check with the numbers that matter, six progressive drills with dosage and coaching notes, the crossover and handle-height fixes that account for most remaining wobble, progression gates so you stop guessing when to add slide, a one-page decision tree, and a rehearsed capsize sequence.
A technique and boat-setup guide for healthy scullers - not a safety course and not supervision. Do not scull alone without a capsize drill, swim competence and someone knowing you are afloat. Delivered as a printable PDF you buy once and keep.