Gboots said..
The "Acid" is meant to be for critical waves....but I am getting the impressions that it goes very well in smaller waves. Given the relative instability of the Acid and it's relative low volume to length, would an oversized Acid be a good choice for an intermediate in waves of say 2 ft (beach breaks) ? Given you could increase the length , there would be the added advantage of improved glide and better paddle speed.
I also keep reading that it is a much better paddler than the flow .
For example an 8'10 Acid may be a better option in 2 foot waves than say an 8'4 Flow
8'4 Flow 113 L 29 3/8 wide
8'10 Acid 116 L 29 3/4 wide
Love all this analysis
IMO....
The Acid ALWAYS surfs better than the Flow.
Because it's a high performance shape.
The Flow is ALWAYS more stable than the Acid, because it is more of a stability shape.
My 8'10 Flow is arguably more stable than my 9'4 Acid....
I can surf my 8'10 Flow (130 L) in a full wetsuit, but I can't do that on my 9'4 Acid (136 L)
BUT
My 9'4 Acid surfs way better than my 8'10 Flow..... IMO
but then, I am probably surfing the Flow wrong.... I've seen guys rip the crap out of it.
Folks that prefer Quad set-up don't have that choice in the Acid.
Demo the 8'10 Acid and see... bring your Flow to compare.
The super thin nose and tail of the Acid really test my old man "front to back" stability, because I lack the leg strength to recover from those dips.
Side to side, the Acid is really easy, because it is fairly wide.
I think that width, is what allows the Acid to surf smaller and weaker waves well.
In small waves, my 9'4 Acid seems to get lots of "lift" from that width.
Note:
Once paddling or surfing, the Acid nose is a total joy. It's best feature IMO
I allows me to throw the board around with ease..... and I love looking down at it

The obvious cost of all that performance is.... it requires a skill set to use in your "normal" size..... even in a bigger size, it challenges me.
That, and I don't use it in bigger waves. Which I always add because I want to always give my honest feedback.
I've seen Jacy killing bottom turns on the Acid in OH Hawaiian surf, so again... everything about life is personal, and everyone is different.
As to your question:
IMO, my 9'4 Acid, easily out-surfs my 8'10 Flow
Funny thing about this video.... I started the session on my 8'10 Flow,
but after riding my 9'4 Creek all summer, I was really let down by the smaller Flow.
I made the 1,600 yard walk to the car park and grabbed my 9'4 Acid for comparison.
1st time I surfed the Acid since my Creek came.
Acid in 2' beachbreak last summer.