by dtc » Fri Sep 21, 2018 5:00 am
There are two different issues here:
1. Boards with more surface area (so longer, wider etc) are more stable so easier to stand up on and give more margin for error (eg your feet can be in the wrong place or you can be slower to your feet)
2. Boards with more volume are floatier so easier to paddle (hence why the foam board propelled you further)
Both stability and paddle ability are important and, for beginners, should be maximised
So the reason an 8’4 is better for a beginner is because it’s longer and more stable. The reason the 8ft is better is because it’s higher volume (wider and esp thicker). In other words, it’s not that one or the other is ‘better’ overall, it’s that they both have (relative to the other) benefits and disadvantages
For your skill and weight, you probably should look at something around 90litres+. The 8’4 (bic magnum I assume) is, I think, a bit too small. It may be ok, but you will see bic suggest a weight under 220. But it’s not a terrible choice and there aren’t many cheapish boards that are much bigger in volume, even if you go longer.
However that doesnt mean you have to buy the foam board. The GSI modern double wide at 8’4 would be a great choice (89l). The NSP 9’6 longboard or GSI modern blackbird at 9’1 are options - although not that much more volume, they are longer and have that benefit
And, depending on where you live, you may discover a local shaper can do a board for much the same price as buying a new board off the rack.
Hope that helps