Find out what is moving
Put the heel fully into the shoe, smooth the sock and lace with moderate, even tension. Walk and notice whether the heel lifts, shifts sideways or simply moves a little with the shoe’s construction. Compare both feet. Do not judge the fit only by pulling at the collar with your hand, since that does not reproduce the movement you are trying to understand.
Check that the tongue is centred and that one lace section has not remained loose while the top is tight. An uneven fastening can make you keep pulling on the final eyelets without changing the part that needs attention. Start again calmly rather than layering another knot onto an arrangement you have not inspected.
Change one part at a time
Try a small adjustment and repeat the same walking movement. If the manufacturer or fitter recommends an alternative lacing arrangement for that shoe, ask for a demonstration and check how it feels across the whole foot. A more secure heel is not an improvement if it creates uncomfortable pressure over the top or restricts comfortable movement elsewhere.
Avoid treating maximum tension as the target. Laces should secure the shoe, but they cannot change every aspect of its shape. If the heel remains poorly held unless the rest of the foot feels compressed, compare another size or model with appropriate fitting help. A sock change may also alter the combination, so record it rather than assuming the shoe alone caused the difference.
Repeat under ordinary conditions
Use the intended socks and an allowed test space. Include turns and a short incline if available, without creating an exaggerated test that you would not normally perform. Notice whether the adjustment stays in place and whether you repeatedly feel the need to retie. Follow return conditions while deciding; an outdoor trial may change what a shop can accept back.
Keep a note of the lacing arrangement that worked, but reassess it when changing socks or shoe versions. If discomfort persists, stop experimenting with tighter fastening and seek suitable advice. The aim is a settled shoe with comfortable overall fit, not a heel held motionless at any cost.
