5th centre fin for Sweet Potato

[cuttlefish]

thanks Chris.
The owner of the local surf shops' 5'10" will be mine for a spin this morning.

High tide, small (1-2') beachbreaks on offer. Sweet potato territory.
At least all my curiosities will be addressed by taking one for a spin.
We can all talk until we're blue in the face but it only goes so far and ultimately the proof is in the riding.
I know for my height (6'1") weight (92-95 kgs) and skill level Adv/Int I'd be on a 5'4" or so but the age has to be taken into account.
Sure I can ride a tiny board sometimes but it's more hard work than I'm interested in and surfing flat out with big manouvres all over the place can have me waking up the next morning feeling like I've been beaten up (P'nator but "oh, what a feeling") .
So I'm going for the cruisier end of the spectrum. I've had a 5'6" mini-simmons with 43 litres of volume long before the Sweet potato appeared and it's Achilles heel was being able to paddle fast enough in a crowded point line up to nett me my fair share of waves.
That's why I'm interested in extra length and volume. I recall reading over in the old forum archives of some posters saying longboarders would paddle past them like they were standing still...or they could not catch many waves compared to their longboards. I'm always competing with longboarders for waves and they are super greedy where I live.
It will be interesting to see what my next post reveals after riding the 5'10". Too much board...spot on...or just a few litres more in a 6'er thanks?
I'm predicting 6' X 23" X 3" is my set of numbers. Spent 11 years in Thailand and the Thai made 6' Sweet potato has great set of Buddhist numbers. The number 3 and multiples of. :-)