I prefer renting for multiple days to play in a higher league.

I have to over rent to protect myself from a cancelled rental which may drop my end if season league finish.

Problems on both ends.

I'd prefer a contract that is unbreakable.

The terms should be settable,

• Max length of rental
• Min length of rental
• Open to cancellation
• Unable to Cancel
• Price variance % increase/decrease to cater to significant market ups and downs to keep a longer rental reasonable for both parties

Setting fixed Minimums should just be a default, changeable depending on users motivations.