Its your choice Deathstalker ..
I have a 14 year old cheap as chips PVC SIB..and its rolled up and shoved in a corner of the shed every year.. no problems.
I also have a dear as donuts PVC SIB.. kept inflated under a tarpaulin ..on a trailer in the garden..its 11 years old.
I also have a 30 year old Hypalon Avon redcrest ..it spent around half its life inflated ..but for the past 15 years..its been ..rolled up ..in the other corner of my shed
All boats are real too