Hi, Terry.
Yes, I had the same problem. Earlier this spring, they put me on one of the club trainers, a slab wing scratch built plane with a .15 Enya. About half way through the fuel load, I was getting a little dizzy. It was turning laps under 4.5 seconds so that didn't help. The guys noticed and yelled asking if I was OK. I kept it together long enough to complete the flight and get the plane back on the ground in one piece.
Most didn't know that was me first flight in over 40 years so we all had a good laugh!
I've destroyed about 5 planes so far learning to fly the pattern so many of my flights are first flights on the airplane/engine so I've learned that if lap speeds are real short, I'll get the plane in solid level flight at about 20 feet, then, instead of watching the plane constantly, look ahead maybe a quarter lap and let the plane fly into the center of my vision. Just a second on not spinning your head seems to help. Just don't let the plane get ahead of you!
Hope this helps.
Bill