kook_lover wrote:[
In regards to the text i have quoted. I am not blaming my board at all, its a joy to ride. The fact that a group of adults (apparently) on the internet can't understand why an approx. 75kg man cannot sit 'up right' on a 60l shortboard is the perplexing issue.
I think you are mixing up (or not properly articulating the relationship between) volume and surface area, notwithstanding your MPhys. Its not the volume itself that creates instability, its the surface area. SUPs have a huge amount of volume and are very stable - because of the surface area.
I guess that, past a certain point of volume, a board will become less stable for a given size (ie past that point, increasing volume will decrease stability), but I dont think 58L at 6'6 has reached that point, given your weight, and I suspect most of the people causing your perplexity also dont think it has reached that point. You obviously disagree
In any case, no longer relevant: like most beginners you will realise at some stage that going longer and wider, with an outline that assists stability (eg rounded nose, parallel rails) will work best. That means a funboard or long board. The realisation may happen before you are tempted to buy a shortboard or after you buy a shortboard and end up buying a second, longer board.
The first board you buy wont be the last board you buy; it might only be a board that you use for 6 or 12 months. But there is no reason at all to make your learning harder than it already is - if it takes (say) 9 months to get to a certain level of skill on an 8ft board, it might take you 12- 18 months on a 6'6 board. You can usually sell your second hand board pretty easily, so the financial effects arent particularly great (I just sold a board I bought 6 years ago for the same price as I bought it)
Pretty much everyone has suggested the same thing; I'm not sure if you are after someone to say something different. If you want to stay on a 6'6 then by all means go and find one. However, dont think that volume is the be all and end all of board measurements; its just one of about 10 measurements. In other words, a beginner is much better off (in my opinion) on a 7ft6 board at 45L than a 6'6 board at 45L. And even better on a 7'6board at 52 or 55L