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Chattanooga, TN (423) 555-0179 Fitting since 2016
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Bounce Lab Golf Wedge & Full-Bag Fitting Studio
Journal / Wedge Fitting

Inside the Sand Tray: What Three Lanes Actually Tell You

A spec sheet gives you a bounce number. A sand tray shows you what that number actually does when it meets the ground.

When we set up the fitting bay, the sand and turf tray went in before the launch monitor did. It's a low, three-foot-wide steel frame split into three separated lanes, each loaded and maintained to reproduce a specific condition: coarse clay-based bunker sand, firm summer Bermuda turf, and the softer overseed rye that most local courses switch to for winter. A slow-motion camera sits at ankle height on a slider rail, angled to catch the sole from address through the exit of the swing.

Why a Number Alone Doesn't Settle It

Bounce angle is printed on the back of every wedge, but the number by itself doesn't tell you whether that sole will glide or dig in the conditions you actually play. Two wedges stamped with the same bounce number can behave differently depending on sole width, camber, and how much of the leading edge is relieved at the heel and toe. The tray exists to remove the guessing from that combination.

What the Coarse Sand Lane Shows

Clay-based bunker sand common around Chattanooga sits heavier and coarser than the fine coastal silica sand a lot of national bounce charts are quietly built around. In the coarse lane, a low-bounce sole frequently digs deeper than expected, while a slightly higher bounce or fuller sole tends to skim through more predictably. Watching that difference on camera, swing after swing, makes the reasoning obvious in a way a printed chart rarely manages.

What the Firm Turf Lane Shows

Summer Bermuda gets tight and firm by late June most years. In the firm lane, a high-bounce sole can catch the leading edge and bounce the club into the ball before it reaches contact — a common cause of thin, bladed chip shots that players often blame on technique rather than equipment.

What the Soft Rye Lane Shows

Once courses overseed with rye for winter, the ground softens noticeably. A sole that performed well in summer can suddenly feel unsupported, with the leading edge diving before the bounce has a chance to do its job. Players who only get fit once, in one season, often never see this half of the picture.

The tray isn't there to replace a fitter's judgment — it's there so you don't have to take our word for it.

How We Use It During a Fitting

We rarely make a bounce or grind recommendation from the tray alone. It works alongside attack angle data captured on the launch monitor and a conversation about the specific courses you play most often, since a player who mostly sees firm summer conditions has different needs than one who plays mostly in shoulder-season softness.

The Takeaway

A bounce number is a starting point, not an answer. If your current wedge feels like it fights the ground more often than it should, watching your own sole move through sand and turf side by side is usually the fastest way to find out why.

Put Your Sole Through the Tray

Wedge fittings include full access to all three lanes.