Ghetto Tubeless w/ Gorilla Tape on a BMX Bike or Dirt Jumper - Good Idea? Why or why wouldn't you go tubeless on a 20" BMX or DJ bike?

Got a lot of pinch flats recently and was look for a better solution than having to buy a tube every day/

I was considering doing the gorilla tape method on my 20" single wall BMX... is this a bad idea?

From my research, I've found:

Tubeless Cons


Sidewall takes a beating in BMX / DJ causing the tires to burp (more dangerous, could cause crash)
Sometimes you want higher tire pressure (BMX street riding) and tubeless is not good for high pressures


Tubeless Pros


Lighter (by a little)
Easier flat maintenance 
Better against thorns than a tube
Is able to run lower tire pressure for more grip
Cheaper in the long run (tubes are ~$10 a pop)


I mostly dirt jump with my BMX, so I see more pros than cons. Any experience or thoughts?
Your pros list for tubeless is highly debatable.  

Tubeless are less likely to puncture and more likely to self seal if they do puncture, so you have to fix less often, but.... Fixing a tubeless puncture that did not self seal is a workshop job, not a field job. MTBers running tubeless carry spare tubes so they can get home if they puncture. 

Weight - much less a concern for DJ and BMX bikes. In reality, most riders could afford to loose 100 times more weight than the difference tubeless makes. 

Cheaper in the long right - very doubtful. Tubeless require a slime top up every 3 - 6 months.  Tubes are a one off lifetime cost.  

As is you cons list.
Maintenance - 3-6 monthly slime topup vs an occasional squirt of air into a tube.

Cost - slime is not cheap.  

IMHO tubeless for a DJ or street BMX makes little sense as the single big advantage - running lower pressures to get more grip cannot be utilized.