why not just try the next step up from a trainer with a buddy box to see if your comfortable with it. i've been flying 30 yrs. ON and OFF, sometimes years in between. always nervous when coming back. flying my friends trainer recently, and my son's a few years back, i think i do worse! they aren't fly where you point them. a couple of popscicle sticks under the trailing edge of your trainer will make it more exciting too. (as Mentioned earlier). have a go, just don't go OVERBOARD!!! After a few years off i started back with my first pattern plane. like riding a bike.
just my $.02 worth. BUDDYBOX til your comfortable.

PS. Trainer will make a great floatplane also!!!