Stuck on lesson 5 of the Halpern method

So I can mount and ride as far as I want if I'm holding someone's (usually
Christa's) hand, sigh. Or I can mount and ride a revolution or two before
stepping off by myself. Lessons 1-4 went pretty fast... how do I get past
this?

I know, more practice. Any other advice?

--
NOBODY expects the Spanish Inquisition! Our chief weapon is
surprise...surprise and fear...fear and surprise.... Our two weapons are
fear and surprise...and ruthless efficiency.... Our *three* weapons are
fear, surprise, and ruthless efficiency...and an almost fanatical devotion
to the Pope.... Our *four*...no... *Amongst* our weapons.... Amongst our
weaponry...are such elements as fear, surprise....