I quite like em.
bags of warp in the bottom, so quite pitch stable, and a reasonably soft ride with that fine bows.
I wouldn't overpower it, and try to go 'really' fast tho', as that hull type will bite your arse if you're not carefull. A 560 (18'6") bit my arse once at around 70, hooked 'instantly' spitting me and me mate out, along with much of the content of the boat (seats etc) smashed the screen, and tore the rubrail off.
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