tiger, 1671655102

Hey Jo. I'm assuming the fins in your board are a removable fin system such as futures. If you are using regular upright twin template fins, try swapping them out for a modern keel type fin. Their swept back template and base sits further toward the tail and give the board a lot more hold. Worth trying before exploring other options.

udo, 1671657890

Good advice Tiger- Jo this may explain a bit
https://youtu.be/WejwLL1_wLQ

johannes_rausch, 1671662880

Hi Tiger and Udo,

Thank you so much for your advice.
I've tried the following fins:
https://captainfin.com/collections/twin-fins/products/tyler-warren-twin-trailer-especial-single-tab
https://captainfin.com/collections/twin-fins/products/christenson-twin-especial-single-tab-1
The second one worked a slightly better, but still not what I was looking for. I just can't push the board at all in smaller waves or non-powerfull waves.
Would you try something like that? Or can you recommend a fin (future system)
https://captainfin.com/collections/twin-fins/products/mikey-february-keel-single-tab
Any statement to the idea I have?
Thanks for the help.
Jo

lostdoggy, 1671665045

Even in the video in your link, Johannes, the surfers look competent and the waves good but the board looks to be holding them back through all the turns.
And that’s them promoting the board.
I’d say it’s probably just a bit of a dog, unfortunately.

stunet, 1671665862

I'd somewhat agree with the above, Jo. That surfing isn't a great advertisement for the board.

If you're gonna pursue some sort of action, I'd consider routing in a single fin box and riding it as a 2+1. The board will lose a few yards of pace but you'll gain a greater range of turns, and also find it's a bit more stable too.

That said, I'd probably look to offload it and try something new.

johannes_rausch, 1671672549

Hi lostdoggy, hi stunet,
Maybe I was just blinded by shaper's enthusiastic description of the board when he raved about it in the shop.
Let's see what happens when I install a fin box in the middle.
Maybe I'll just have to sell it and wait for the Morning Of the Earth board. Wherever I get this one in Europe....

Rough idea where to place the box?

Thanks for your help guys

udo, 1671673664

Jo you may find this informative
https://www.swellnet.com/news/swellnet-dispatch/2021/10/14/the-mid-lengths-ate-surfing

eat-your-vegies, 1671673995

Personally I’m not sure the boards the problem , in the video anyway.
The guy surfing is riding fairly forward and kinda looks like someone who’s used to riding shorter boards.
You know, popping up with the same amount of board in front that they’re used to.
Looked like he just needed to move back a bit and feel his wax in.

GuySmiley, 1671690416

I’ve been listening to a podcast lately called Salt of the Peninsula about surfing legends of the Mornington Peninsula. Anyway at least two episodes are on very well known shapers past and present of twin fins and I remember one talking about the false need of a trailing fin; something along the lines of if you keep a rail buried you must have a fin holding. It sounds good and makes sense but it’s kinda beyond my comprehension.

indo-dreaming, 1671743900

If it's in good condition its sounds like you just need to move the board on rather than mess with it which highly likely wont improve things they way you want.

Agree that video was not a great advertisement for the board either.

velocityjohnno, 1671773047

Convert the board to a 2+1, larger fin in the rear. It will turn predictably and be able to have turns pushed, cut back with hold and precision and be able to do this small through to powerful, larger waves.

The long rails of this type of shape will provide the speed down the line without the need to pump or skate fins.

3 1/2" gap between the rear of the stabilisers and front of the rear fin and adjust from there to your preference.

lostdoggy, 1671773509

[quote=velocityjohnno]
3 1/2" gap between the rear of the stabilisers and front of the rear fin and adjust from there to your preference.[/quote]
I only go about 1 inch back.
If it’s weak and junky I sometimes cluster it right up and the middle starts where the sides end.

blackers, 1671781718

Maybe see if you can borrow some keels first, before you do anything.
It can make a heap of difference in terms of drive and hold. I use both of these in similar style boards to yours, the upright keels are looser and sit somewhere between the traditional keels and those MR style twins.
https://needessentials.com/products/keel-fins
https://needessentials.com/products/torren-martyn-hand-foiled-raked-keel-fins-black

If they are no good probs sell it on and get something you like more. Good luck.

johannes_rausch, 1671826473

A single fin box (or a future box) in the middle should tend to do no harm.

Should I place the single fin box 2 1/2 from the back? Then I have room to play around with a center fin (stabilizer)

Something like that: https://www.sanctumsurf.com.au/longboard-stablizer

Then I can try out different combinations of fins.

Thanks for all your help!

tiger, 1671827433

If you're going to set it up as a regular 3 fin set up, it will be best to have the rear no closer than 3" from the tail. If you go for a fin box to accommodate a larger centre fin probably around the same. Depending on the thickness of the foil in the tail, a fin box may not fit that far back.