Let's not get carried away :-)
There is nothing at all wrong with your little boat. She's a simple little boat, and that is exactly what she was ever mean to be, lest novices should become overwhelmed with all the strings that sailboats must necessarily have.
There is a device all sailboats should have. It's called a "topping lift" because it "tops up" the end of the boom. It's a string that goes from the outer end of the boom up and around a "pulley" (properly called a "sheave") at the top of the mast, then down to the deck
where it can be fastened on a device called a "cleat".
On little simple boats like yours, the manufacturers don't provide a topping lift
, Many people work
around that deficiency by lashing or clamping a short little bit of line or wire to the backstay at a convenient height. On this "rat tail" is a hook of some kind, like a carbine hook, that can catch an eye at the end of the boom to hold it up. It's a workable arrangement although I, personally, detest it.
So: You hook the boom to the rat tail - then you hoist the sail. Then you slip the boom off the rat tail. When you come to take the sail down ("strike sail"), you turn head
so the boom comes midships. Then you hook the boom end to the rat tail. Then you lower the sail.
Since it's so really, really easy to rig a proper topping lift, why don't you do that next time you have the mast down?
Remember this forum exists to help people who are new to seafaring.
A minor thing: Your sail wasn't "reefed" — it was "furled". A furled sail is one that has been put away and lashed to its "spar", in this case the boom. A "reefed" sail is one that is still working, but has been reduced in area in order to ease the wind pressure acting on the boat.
So, welcome to the forum and enjoy your little boat. I've taught quite a number of people to sail in 20 foot boats, specifically the one called the "Cal 20"