Regarding Part 1 -
Teach the turn straddle back hop by starting with a half horseshoe, then
half horseshoe with step hop off the same side (5 + 6 count). Then turn
the step hop from the side to back (similar to a whole horseshoe the same
counts anyway but with a back hop turn. You will end up in the same position
as a regular horseshoe)
I usually just add over the tops to go back to a simple move, the participants seem to need time to adjust between fancier movements. When I add many fancy moves back to back the participants most always get lost. Change the over the top part to anything if you want.
Regarding Part 2 -
I start the knee cha cha with a regular repeater, then change to - knee
1,2,3 (cha, cha) on the floor (next to the step) knee again and off the
side - same count as a repeater, then take the cha cha from the floor next
to the step to astide the step knee and off - now I might show the shuffle
down the step (basically a fancy turnstep = the same counts) all by itself
a few times, finally adding the two together note - the knee cha cha knee
and off turns into knee cha cha shuffle there is no knee and off - 8 counts
- do the L step or maybe a knee straddle knee and off - whatever you want