^ Grand stuff Da Ghost - glad you got it working
I've run the GL flex in my Mason Smoothie - around about the same wave size - certainly a fin with a lot of potential - but some of our waves lack a bit of thump, so I switched it out for a 9.75 Skip Frye - stiffer, bit more upright, shade more base and gave the board a bit more drive while still retaining a bit of twang. The GL flex is the natural fin for the boards and will be using it when i get a chance to ride it in some decent waves - but the Frye makes an ideal fin for when the waves / crowds are a bit unpredictable.
Like you, i feel surfing is all in the mind - first time out on the Hull i felt like bamby on ice - not because of the board, just my mindset was such that i was expecting it to be a slippery customer - had a few fun ones but also got bitten by the board for my troubles. After that (apart from one stinker in which it wouldn't have mattered what board i was on - just one of those bad days at the office) i try to treat the hull with a healthy bit of disrespect. Kind of like when there's a super sexy lady in the room, and she knows it, then cast your eyes somewhere else and merely shrug when she ask's you the time- after that, they become putty in your hands - kinda. Or you miss out on getting laid. - Either way, it's all fun
^^ Samiad, I had a go on a mates HG (the perfect shortboard for a longboarder - dunno why everyone plums for a simmons thinking they're a mini-LB when the HG is on offer - super responsive but more in tune with an LBer's sensibilities) - he was running a 4A too - bang in the centre of the box, and the board was so willing. Personally I'd love to try an A-Flex in one as I've been amazed buy that fin on my longboard - it's a revelation! - Like you - I used to run big rudders in my LB's but over the last year or so I've been finding way much more luck with either an A-Flex or a fin with less area - the Velzy noserider is a cracker - I also find the Gene Cooper 10" works great on my more tubby logs - it's all horses for course I know - but personally I think LB'ers are being a bit 'conned' with this retro stuff and there's a lot of fins on the market made purely to fit more 'graphics' on. Basically, if it's got an old guys name on it, then it'll work out great...Greenough,Frye, Velzy, GC, Andreini - all outstanding fins... some of the latest creations are good, but not great.