"Pool disguised as pond with in ground trampoline in place of a diving board! yes, please. This is my idea of an in ground pool." -- I don't like the disguised as a pond idea but I LOVE the trampoline idea!
No spare tire laying around but I got the same effect with the top to our old mini trampoline. After a quick run by the hardware store and about 15 min to set it up my kids are spinning and swinging the day away.