I have extracted a wee demo video from the material I originally recorded about single ended rolls.
The demo relies very heavily on double downs partly because that's my natural way of playing jigs but partly too because some rolls will leave you with an inverted stroke direction.
The video uses lots of different types of these rolls mixed up in a jig format.
There is a 45 second full speed version and then a 1/3 speed version that is actually much more illustrative than I had hoped. It also illustrates the wee timing glitches and drags out the erroneous shell contact - oops :)