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windsurftom said..
Does the foiling get more fun as you get on to smaller wings? I was on a 2400 front wing and 6.5m wing this morning and maybe because it all clicked quite easily I just didn't get the same rush I would windsurfing in 20kts.
Yes, as your skills evolve, smaller foils should be more fun. I tried to find your body weight above, but don't see it. In any case, 2400 is very big, and will be very slow without a lot of drive force pushing it.
A consequence of lift is drag. Let's assume we compare foils of the same general design/shape and the only difference is the size...
As a general rule, if you can get up on foil too easily, then the foil is too big for you. Because once you are up, that big foil has way too much drag and just wants to slow down. So your arms will get pulled much harder in strong winds and in light winds the big foil just wants to slow down and stop. You never get any moment to relax and enjoy the flow. You will "bag out" your sails sooner. Plus the bigger foil will have a wider span, so it'll resist roll much more, and that means you need to apply much more pressure to each side to begin/end carve turns. And ... a foil that is too big will glide less, so in lighter winds you will have to pump more often across lulls, when the right foil for you will glide across without you doing anything.
On the other hand, if you can rarely get up on the foil, then the foil is probably too small for you. Not foiling is disappointing and working extra hard to get up, or a need to focus too much on maintaining high speed thru tacks or gybes, can also take away some fun.
So there is a right size foil for your skills, your target riding type and the choice of board and sail and the conditions.
PS. Don't forget that lift-drag depends on more than simply the projected area. The aspect ratio (AR) and the foil cross-section each make a big difference. And some foil designs are far more versatile or very application specific.