Select to expand quote
Mucel said..
I don't understand why are good for slow waves because they need some slope to catch the waves.
Well, this shows how it is hard to advise people over the internet.
These boards can take off quite early with a bit of technique, to use the width of the tail as leverage. You need to feel where is the "bump" of the wave and time your body movements to push on it. This is why for instance Gong does not advise "Tomo" SUPs for people with not enough surfing experience, who need length to compensate for less wave knowledge.
This is just to answer your "I don't understand". You are absolutely entitled to prefer gliding mindlessly into a wave rather than having to "hunt" for the best time&place for the takeoff.
As for my advice, what you may enjoy is a "just a bit shorter" longboard, e.g. in the 8'6" range, not a full 9'. Something with a flat rocker for early wave entry, but a pulled in tail and rocker to handle more size. E.g. Some friends here enjoy a lot the 8'5" Gong Zero (longboard SUP), but most brands have these kind of boards: JL Destroyer, Infinity new deal, SB Wedge, ... the list goes on.