(Off topic: most 152s are out of mass and balance limits with two whipper-snappers on board, let alone two or even one averagely weighted chap - making them unsuitable for a skills test with regards to CAA Standard Doc 19(A).)
Train in something you can be tested in.
Thin types are only jealous of the amount of kinetic energy we posess in a dive anyway.
That's potential energy + kinetic energy. I feed my friends!
