Shark cats (esp the 18 footer) are a beautiful thing, when use for purpose and well set up they are awe-inspiring. but they are not perfect and not for everyone.
Difficult to handle solo , need to be set up to float at cruise , need 2 motors and have additional maintenance and running cost of the 2nd engine, and they are wet if there set up right not spray but mist sucked in from behind from the air and water cushion they ride on so everything will be "moist" they slap on the troll and at rest and do not have the best cab set up.
That said i have fond memories of setting out for the reef on a 60nm run and pulling up 40mile out to wait for the formulars and haines hunters to catch up while we had a sanga and a beer.
in there element they are very hard to beat ....... they can also be very hard to live with.
Welcome to boats
BigE