I always rode boards over 24 wide when I was long boarding,mainly for stability reasons,and for knee paddling,never had a problem with sitting on them waiting for waves either,I have seen current longboards @25 wide.I had a stint on a26 wide performance sup for a while and it was doable,but so much more dynamic with a paddle.I'm sup only now as my body has had enough of prone 
Yeah I get people go wider to knee paddle but what performance? Isn't that why we surf, not a paddle out? Ok widest 23 3/4 on a 11 foot glider but normally 23 1/4 max
Totally agree Mac,but for me with on going and worsening shoulder problems ,my theory was if you can't catch you can't ride .I have mentioned before my favourite board was the tak price 11.2 and that was 24.5, wide stepping away from topic if I may,recently out of frustration/curiosity I've been riding a surf Matt,to stay in the water ! In over55 years riding just about everything that has come and gone it is without a doubt the biggest challenge yet,as a well known Matt rider says you can catch a wave first go ,but it can take the rest of your surfing days to master !Ahh light bulb moment! Stop trying to master it and just have fun ! I think It's about still getting in the water as you age !
I've got a few that are 24"+
My Munoz ultraglide and superglide are 25" and 26.25", respectively.
I'm pretty sure my 10' In the Pink is around 24"
My 10'1" Creative Army Cruz is 24"
and my 10'3" Creative Army Jumbo Jive Mini-Glider is 24.125"
So, pretty much any of my go-to boards are 24" or more.... but they're also all 10' or more too.
And I suck at surfing.
That's good to hear. My 12' glider has turned into an 11' glider after the cutting machine broke itself trying to cut 12'. Apparently it only goes to 11'9" not the 12'3" it supposed too.
Anyway, 11 x 24 had been doing my head in and I have kept repeating the mantra "Trust the shaper". Good to hear lots of reputable brands go out that wide.
The board is cut and awaiting shaping, so it won't be too long before I find out.
10' x 25" is proportional to shorter narrower boards. The extra curve in the outline helps with turning also.
It appears the width is more about comfort,under arm,carrying ,and sitting on ,I agree that wider boards afford the shaper to put more curve in,where it's needed for custom reasons,for me stability / buoyancy were always paramount.
