I use the "Lego Blocks" that you use to level the TT side to side.
Make a ramp out of the lego blocks and back up or pull forward on the lego blocks depending on which tire is flat. The good tire is on the blocks and the flat tire is off the ground to change the tire.
I agree with "troutslayer" that they are rather large and take up space.
If you feel more comfortable using the "Trailer Aid", by all means, use it. Hopefully you don't have to, but it's there if the time comes.
HAPPY CAMPING!! :D
Daryl and Sandy
2013 Eagle 314BDS
2012 Ford F150 Platinum, 4 x 4 Crew Cab with Ecoboost