I have a Zodiac 2.85m SIB and I have nowhere to store it inflated at home, so it gets put back in its bag and stored like that after each use.
Although when on holiday we leave it inflated for the time we are there.
The boat is now on the fifth season of use, and it has been used a lot! We've been to Norfolk, to Windermere (going again next weekend), on the River Dee in Chester, on the canal many times, to Scotland twice....basically anywhere there is water! It is still in perfect condition with no signs of distress from the repeated inflation/deflation and storage.