Jet-Powered Sleigh - What to do?

[Gt city]

I have 8 those Jet-P Sleight in my Warehouse, and another 13 will be "produced" when will collect all stuff from Faster than the Wind collection.
What is best way to do? Use them in hangar, then sell immediatelly (200 coins each)?
I think will do that.

 

[GamingSwiftie]

As they break, I've been "dropping" them and replacing them with fresh ones. But then I'm dealing with a time factor still and it saves on the 15 minute repair time.

 

[twisteduk]

i had about 20 and was only using 3 as just didnt get enough items to build hangers, i just sold them all