The rockers of Gold Seal and Pattern 99 blades are very, very similar. I wouldn't expect a big difference in spinning between them. I didn't favor one over the other for spinning after skating in each of them for a couple weeks.
Here is a graphic that I made by tracing the two blades and overlaying them in Photoshop. This makes detecting rocker differences easy, but as you can see, there isn't much difference.
Wow, there's barely any difference in the profile, I didn't know they were this similar.
I might have the chance to get a P99 for a lower price (I'm just so curious and intrigued by how those differences in the blade profile impact the feel on the ice), but after seeing this, I'm not sure it's even worth it.
But I'm also confused. The lowest pick also looks identical on both blades, I thought P99 was supposed to have a more prominent one?
*My own GS blades had a side hone that didn't extend to the cutting edge, so contrary to some claims, it could add NO benefit in edge grip.
How did you assess that, just by visual inspection or did you measure it with a calliper?
Because when I switched to GSs, I could definitely feel a sudden increase in the grip on edge jumps, at that moment where you deepen the edge right before take-off. It was a lot stronger than what I was used to from my old blades (and despite having a shallower ROH on my GSs!) and it totally threw me off and took me a long time to adjust to that sudden 'grippy' sensation.
They also 'behave' differently f.i on forward crossovers when I sort of ride out each edge.
The difference in grip between a neutral or almost flat position compared to a more angled blade feels a lot bigger to me on GS blades.
I then just figured that this must be due to the side-honing, because it makes sense when I imagine what the cross section of a side-honed blade looks like.
(Or it's just me being hyper sensitive and it's all just in my head it's quite possible too)