I am in a similar situation.I love my nelo k1 vanquish too!!
Its fantastic,tons of FUN!!Feels wondefull.The thing is I
need a super fun/fast kayak for open,rough water as well.There
seem to be so many out there.Some guy told me get any entry
level ski.I can paddle the vanquish no problem whatsoever.
I think there must be one brand that really is better than the
others in many aspects/features.The ski type kayak is really
what is needed when paddling in open waters whether totally
flat or not.One has to be able to get back in if one tips.
I tried Ted van Dusens Mohican.It seems good.He also uses
an autoclave in construction.This is supposed to,I hear,make
a better boat.The mohican also can easily be used with a k1
style seat.I like that.Gives more versitility.It also can be
used easily with tiller style steering.Then a guy who has the
Mohican told me it was not so great in rough water.He told me
to check out the Huki S1z & S1x special.But Huki uses no autoclave,does not have nice hood over feet.(EOS 660 looks as
if it has the hood feature)cannot be easily fitted with a K1
style seat and Huki makes no tiller steering system for it.
Huki S1z &S1x special can take a gull wing to help seaworthiness/stability when/if needed.S1z is supposed to be
as fast as Vanquish on flat sprint and faster for marathon!!
Would be real nice if all these top skis were available to
checkout in our neighborhood wherever.Best luck!!!
www.vandusenracingboats.com