Greenough Power Glide 45

Born From a Broken Fin

The Power Glide 45 exists because Ellis Ericson broke a Power Blade. Working with Greenough on a replacement, they didn't just rebuild it — they modified the outline, adding more rake, more area, more flex, and softer curves. The result wasn't meant to replace the Power Blade. It was designed to make the twist-fin concept work for a wider range of surfers and boards.

Where the Power Blade is a specialist — built for edge boards and flat-rocker shapes, surfed from the tail — the Power Glide opens the door. It's more forgiving, more adaptable, and it holds its line through the kind of larger, smoother arcing turns that most surfers actually draw.

The 45 Isn't Really 45

The "45" in the name refers to what the rake looks like — approaching a 45-degree angle. The actual measured rake is 32 degrees, which is 9 degrees more than the Power Blade's 23. That difference sounds small on paper but it fundamentally changes how the fin turns. More rake means a more generous turning radius, longer drawn-out arcs instead of the Power Blade's snappier pivot, and considerably more forgiveness if your timing is off.

The additional rake in this fin allows for a more generous turning radius as well as a bit more forgiveness overall. This fin will hold its line through larger and smoother arcing turns.

Same Twist, Different Character

The Power Glide keeps the same fundamental innovation as the Power Blade: the head twists rather than just flexing. This produces variable tow — the fin twists back and forth based on the angle and direction of attack, generating propulsion like a fish tail. It's still a twist fin at its core.

But where the Power Blade channels that twist into tight, vertical redirections, the Power Glide spreads it across a wider arc. The additional area means it feels steadier underfoot. The extra flex makes it more responsive and adaptable to changing conditions. It's the same engine in a chassis that handles more predictably.

The construction is identical to the Power Blade — the same proprietary blend of heat-treated, high-density epoxy and fiberglass that Chuck Ames developed with Greenough. A stiff leg supports all the load while the head twists freely. No stress fatigue, no fiber breakdown.

The Specs

Who It's For

If the Power Blade is the edge-board specialist, the Power Glide is the twist fin for the rest of us. It works on mid-lengths in the 7'-8' range, single-fin surfboards with flat to moderate tail rocker, and edge boards. It's more forgiving than the Power Blade on boards that aren't purpose-built for the twist-fin concept, which means you can experiment with it on your existing quiver without committing to a full edge-board setup.

• +Mid-lengths: The added forgiveness and wider arc make it a natural fit for 7'-8' single fins.
• +Edge boards: Still the intended platform — it just handles them with a smoother hand than the Power Blade.
• +Flat-rocker singles: Any board you surf from the back third, with a flatter bottom contour.

Same caveat as the Power Blade: not for hulls, not for traditional logs, not for noseriding. These twist fins want to be driven from the tail. If you surf from a forward stance, the 4A is still your fin.

Power Glide vs. Power Blade

Neither one replaces the other. The Power Blade is the purist's choice for edge boards and dedicated setups. The Power Glide is the twist fin that works on your existing single-fin quiver. If you're not sure, the Power Glide is the safer bet.