If you are visiting the Isle of Man temporarily you will become resident for income tax purposes if you stay for more than 6 months in any one tax year. If you visit and then decide to stay permanently the government will ask you for the date you first arrived and when you decided to stay permanently. If you intend to move there permanently you will be classed as resident from the first day of your arrival. If you live elsewhere and make, or intend to make, regular visits which in total exceed 90 days per tax year you may also be classed as resident there for tax purposes.
Yes you can. The difference is the words "regular visits". You are making one visit of less than six months.