15 months old and have their learners permit to drive

It has been a while since I have given you a progress report on the pups, Flint and Rush. I really am enjoying training them.
I have just started working on driving with them and they seem to be picking it up fairly easy.
At this point I still have them dragging a line, just in case .

I am just having them fetch the sheep to me and then setting it up for them to push them past me and fall behind them. No real commands other than a stop and positioning myself to help them cover a side or hold the pressure. I want them to feel this before I start adding flank commands. They still are not one hundred percent reliable to take the correct flank and I don't want to muddy the waters by adding any confusion. I am just allowing them to take the sheep away and walking into a position that  causes them to flank., stopping them before they head the sheep and asking them to walk on .
In this way I am creating a small drive and cross drive and allowing them to get a feel of the sheep and the pressures created by driving.  Both are able after just a few sessions to be able to drive the sheep in a box around me. Other than my moving to change direction I may call their name and "here" to pull them in .  Mostly I try to keep as quiet as possible so they can keep focus on the sheep and the "new" job .



Flint taking sheep away from me.

Flint cross driving

Rush taking them away

Rush on a cross drive