[Yoda]

I'm almost certain that I'm using a swinging motion, but I'm having trouble with a tendency to block some shots, particularly with the driver and longer clubs. When I check my motion post impact I always have the feeling that I'm putting an angled hinge motion on the ball.

The Blocked-Out Feeling means you have a faulty Angle of Approach into Impact. You are 'Covering' the Plane Line (with the Clubhead) instead of 'Pointing' at it. You must learn to 'Trace' it from the Inside Out (with the Right Forearm driving toward -- and not down -- the Plane Line).

Said another way, you have a Flat Downstroke Shoulder Turn (10-13-B) and as a result, your Right Forearm is coming into Impact too 'high.' Therefore, you cannot possibly have the correct Follow-through with its Horizontal Hinge Action and Finish Swivel.

The cure is the correct Hip Turn per 10-14-A or B and the correct Hip Action per 10-15-A or B that pulls the Right Shoulder down On Plane per 10-13-D. And the key to integrating this correct Motion is the Start Down Waggle (3-F-5). Study The Top and the seven preparatory Start Down alignments in 12-3-0 / Section 6.