Seakeeper/ gyro following seas

The pivoting action of a gyro stabilizer is just going to help reduce the snap in a beam roll. I fear no help in your bow push.
Fins may help some.

I remember a delivery on a Fleming with fin stabilizers.
They did help in a following sea some but the design of the Fleming's tail, the swells just picked her asp up, the fins max swung and the bow dug in from side to side.
I learned to hate that boat, that night.

I can't imagine any better proof that the very simple answer to your question is no.
BTW, I'd be awfully skeptic even if gyro producers would have said it does help!

Our 43 had prior owner installed 'spray rails' that would "catch" angled waves on one side and roll the boat well before it turned-off. I had them removed ($$) and it behaves much better. In following sea (short period Chesapeake Bay waves) I run a little faster than the swell so the boat crosses the next wave slowly and stay close to perpendicular to the swell, 30 degs off usually is fine, sometimes can run 45 degs off. Otherwise match the swell speed. I'm toying with the idea of re-rigging the tabs to come up further and create some rocker to get a bit more bow up. Currently bow is higher at 24 kts, lower as slow, but that can be faster than I care to run.

I always try to keep an extra 100 gallons of fuel in the aft tank (we have a fwd tank between the engines and an aft tank under cockpit floor).

My wesmar system (DSP5000) has two modes. One for beam and one for following seas. The following seas setting does make a big difference.
Ride is much better. Bow steer and wandering is much less annoying.

Would be interested to hear if you do.

Might want to look at other similar systems such as zipwake, Humphree or volvo. The Seakeeper isn't really as revolutionary as they make out. Similar systems have been around for close to 30 years.