Nice picture !
Deep breath .... it is actually 50 hrs P1 FLOAT time (and I hear that this may just have been introduced in Canada as well). It seems to reflect the insurance companies nervousness about the higher risks involvedd in float flying and also that as there are so few in the UK there is still an evolving market and set of statistics.
I know of two accidents in the UK in recent years, both aircraft were recovered OK, but given that there are so few floatplanes on the uK register that makes for quite a high risk.
Your options at the moment are -
fly with Marilynn a few times a year
buy your own
take a share in one (anyone interested?)
Cheers