I'm trying to skate a big slippery indoor wooden bowl and my F4 101s and STF 103As felt like skating on glass. I'm looking at F4 99A Conical, F4 97A Classic and maybe the F1 99A Classic or OG Classic. The F1 is clearly inferior to the F4s, but I'm concerned about the slipperiness of the F4s as even the 99s have shown to be slidey, which I want to avoid completely (while retaining a high durometer for speed). Would the 99A Conical offer better grip than the 97A Classic due to the wider contact patch?
I have some wider softer wheels that work much better in slippery wooden ramps / bowls, including older Spitfires they don't make any more, but there are other wheels out there, mainly around 95 duro that make slippery ramps feel the same as my 99s on raw concrete, without losing speed or performance. I guess it is down to what you are able to get in the area you are in, but even 97s should not be quite as slippery as what you are currently on.
The other side of it is the surface, as most wood surfaces with decent layers of ply or skatelite or similar clean up really well with a bit of spray and wipe, but if it is more the particle board or something that cannot get wet, then you can't really do much about it. Those things get very dirty and dusty, which is why they feel so slippery, so a bit of cleaning and even hard wheels should feel more normal on the same surface you were slipping out on before the clean.
We did this at a couple of different indoor parks I have worked at / helped with and cleaning the surface made a huge difference to how slippery it was to ride.