Ninety degrees at the top. Everything after it gets easier.
The Pro-Slot Trainer stops your trail arm from folding past the power angle — so your lead arm stays extended and the club has somewhere to go on the way down.
60-day guarantee. Free US shipping.
The top of your backswing is where distance goes to die
When the trail arm folds past 90°, the lead arm breaks down with it. Three things follow, and they follow every single time.
-
Your arc narrows
A collapsed lead arm pulls the club in close to your body. Less width at the top means less speed at the bottom, no matter how hard you swing at it.
-
Your shoulder turn stalls
Arms that fold too early let you feel like you've reached the top before your torso has actually turned. The backswing looks long. It isn't.
-
The club comes over the top
From a narrow, collapsed position the club has nowhere to drop into. It comes across the ball instead of through it — short, left, and weak.
You're not fixing the mistake. You're no longer able to make it.
The Pro-Slot Trainer straps to the bicep of your trail arm with a hook-and-loop closure and gently limits how far that arm can fold. The stop sits at roughly 90° — the power angle you see at the top of every efficient swing.
That single constraint does three jobs at once, and none of them require you to think about anything mid-swing.
- Your lead arm stays extended, so the arc stays wide
- Your shoulders have to complete the turn to get to the top
- The club sits in position to drop into the slot coming down
There's nothing to muscle and nothing to remember. You take your normal backswing and the trainer removes the option of doing it wrong.
Twenty rehearsals a night, no ball needed
This is the whole drill. It takes about ten minutes and you can do it in a hallway, in front of a mirror, with the TV on.
More drills in the full instructional video library.
-
Strap it to your trail arm
Hook-and-loop closure around the bicep. Snug, not tight. Five seconds.
-
Swing slowly to the top and stop
Half speed. Feel the trail arm reach 90° and hold there instead of collapsing past it.
-
Look at your lead arm
It's straight. That's the position you've been trying to find. Sit in it for a beat so it registers.
-
Repeat twenty times, then stop
Short and frequent beats long and occasional. Full-speed swings come after the position feels normal.
What golfers using it say
Took this out to the range yesterday and saw immediate results. I started to hit the ball straighter and increased distance by at least 10 yards in less than 20 minutes.
Awesome training aid! Easy to use, super comfortable and actually helped my game.
Finding the golden spot in the downswing. Absolutely what I was looking for.
What you're getting
-
Universal fit
Right- and left-handed golfers, any age, any skill level.
-
Hook-and-loop strap
Adjustable closure around the bicep of the trail arm. On and off in seconds.
-
Range or living room
Works with real balls at the range and with slow rehearsals at home.
-
Video library included
Full set of instructional drills, free with your purchase.
Groove the power angle this week
Ten minutes a night in front of a mirror. No net, no bay, no good weather required.
Add the Pro-Slot Trainer — $69.99