Yea , i have to agree about Johnny Maya ... was super impressed that , at 105 kg he was riding 112 L...
normally i recommend for advanced to pro riders , about 10 liters minimum more than your body weight for performance surf SUP..
have a few advanced lightweight guys at 65kg on 72 liters ...
There was talk further up the thread about the outline/rocker and its resemblance to the Tomo style shapes and how it deviated from what everyone else was doing...
before this board was designed , i was actually asked to make a Tomo style board ,, my first comment was " No way, not gonna do it "
flat with a parallel outline = trying to fit a square into a round hole...
i said " i will design something with some Tomo features , but i will actually make it work "....
for now i will just touch on a few of the design aspects , not all of them in detail..
Outline ,, the Vanguard has a very straight or parallel outline, from nose to tail ..
you use your outline when on rail ,,, longer more drawn out , outline curve = longer more drawn out turn when on rail...
tighter arc or curve in your outline = tighter arc in your turns...
but you also have to consider where your weight shifts during turns and what your trying to achieve with any turn...
in general when were trying to get down the line and around sections our weight is more central and when we do lean on the rail , our weight is more evenly distributed on both feet ,, so at that time your using the outline curve of the middle of the board...
here on this board its more parallel , so when your focus is here , its at it fastest and will draw those longer lines around sections or just get you down the line...
but when we wanna tighten up our turns we start transitioning weight onto the back foot ,so now we are focusing our energy on the tail 1/3rd of the outline ...
so right where its needed , the outline curve tightens up here , with a more pronounced hip , so as you transition back you literally get a tighter arc in your turn...
Rocker,,, the board has tail rocker , but its a clean exit rocker with a consistent curve , not a tail flip you see in a lot of other boards...
application of Bernoulis law here ..." as the speed increases , the pressure decreases" a curve that slowly gets tighter or accelerates, means that as the water rushes over the tighter part of the curve , there is a corresponding region of lower pressure.. this translates to a feeling as we step back , of the tail end sucking down and you wash off all your speed...
so the clean rocker , will keep its speed when driving off the back foot... but more importantly , without the tail flip , it leaves the board free to carry speed all the time....
yet , sometimes we actually do want to wash off speed ...
in this case , the hip and diamond tail has a dual purpose ,,
1 , to tighten the outline curve to give us a tighter squarer hook when turning off the back foot...
2 , to reduce area in the tail pod ...
Two main ways to slow a board down beside a chunk of weed on your leggie ,,
1 , increase tail rocker or accelerate the curve..
2 , reduce tail area..
so its possible to stomp on the tail for a stall when we want to , to wash off speed , yet still carry speed when we need it ...
Rails,,,lastly for this post , the bottom edge is a tucked under hard edge...
hard edge gives release ,,, soft bottom rail will suck water ..
by having a rail that is both round with an edge on the bottom , means when the board is flat to the face there is enough release to have a fast skaty feeling down the line .. yet when we lay it on rail it doesnt want to over release and feel slipery and out of control, plus it gets up and going nice and early..
a few other notable features are ...
1,,, hip , leading edge of front fin and front channel are all close together , acting in harmony as a pivot point when on rail = nice tight hook...
2,,,,deck is quite rolled with a relatively low rail = greater sensitivity when working or pumping for speed , more speed through a drawn out rail carve as well as more stability when paddling ( i know that last comment sounds counter intuitive) will explain later if someone else doesnt chime in ...
3,,, the generous nose area , gets you up on the plane early , because most of the water is going under the board , rather than being displaced off to the sides...
lastly ... here is a plan of the 8-5 , if someone at home wants to make one without the guess work..
Have an account now ,, so feel free to ask any questions about design , construction or performance in regards to anything we build ....
Regards
BERT