HELP Which Holiday Home Insurance Company Will Also Cover My Rowing Boat In The Policy

I've got a holiday home Which I let out, there's est aussi year old rowing boat for guests' use.
We Had It Previously Insured by Towergate included The Boat Who In The cover, however now tell me THEY THEY cannot include boats and I'm Struggling To Find Any Other Holiday Home Insurance Which Will do this. Anyone know of Any That Will??