I never made it past my 1st trainer, I started about 10 years ago , the "trainer" and I spent about 20 minutes total at the field over a couple of months time...so I lasted about a season, now, I got back into parkflyers for a couple of summers and bought a small glow trainer (jkaerotech T-52) for an .049 Norvel, but I have lots of projects, and engines to move on to and through once it warms up a bit..Rog