If you want powered training because you simply want to get extended flight time in, then go with Condor plus pedals. Go to glidercfi.com and follow some of the lessons. Fly the K-13 for a sort-of-similar experience to the 2-33. Try aerotow over and over and over, and once you nail it, you'll have little problem translating those skills to the real thing. Hit the 'Q' key when you get low to add 1,000 feet of altitude and extend the flight.

As long as you don't mistake nailing the sim flying for real life proficiency and view it as an adjunct to your CFI directed training, you should find that it speeds your progress in real life training for far less cost than powered training.