I am riding strapless, and I am riding strapped.
Some days, especially in clean small conditions (sometimes in lighter wind) - strapless can be THE way to go, and gives you the greatest surf sessions and the "good" feel
And other times - strapped gives you so much more both power and fun
Strapless you get a more finetuned "feel" - which will make strapped surfing even better.
So one style will benefit from the experience from the other style - which is great
I am very often out strapless for one part of the day, and strapped for the other - it works great !
More and more are trying strapless around here - but it is really only very very few (and only the experienced) who does it - and noone is "only" riding strapless (to my knowledge), although a few prefer strapless most of the time, and others like me prefer strapless in some conditions, and strapped in others
There are two trends in general:
Waveriding (with all types of board, TT, BiDi, Waveboards) is picking up more and more, as the experienced riders almost always ride waves, and the freestyle becomes a secondary "just for fun" occasionally, but not for longer periods - then it lacks the fantastic feel of waveriding
And when into waveboards, strapless is a very very small niche here, but growing - so that is trend no 2.
Although, it will (IMO) not be many who goes this way - only a small fraction.
Then you have the kids and the young guns - almost every single of these, are into radical freestyle only, and cant for the world see the point in waveriding, even after having tried some (as they learn fast, they can do it quite good).
Kindly, Peter Frank