In case you do not yet know of this, there is now another company that insures floating homes in our area.
The coverage is NOT the same as with your current company but it's something you should check out - many of us, including me, have switched insurers.
The company is United Heritage out of Utah and the local broker is Thom Hokanson [503.283.4733]
Thom is a nice person who will come to your home and explain the policy differences.
One major reason for switching - the rates are about those of land based homes - my premium was reduced by about 40% !
Give Thom a call - there is no obligation