I really, really want to make a summer set-up this year and I have my own money (I have $300 set aside for this incase it ever happens) and the power tools required to do it. My backyard seems suitable for a set-up, as long as a bit of an elevated drop in is made. However, my parents refuse to let me make one because they 1. say that it is pointless and won't be fun and 2. say that I will get hurt. How do I convince them to let me make one?
tl;dr i can make a setup with my own stuff but parents say it's stupid