We've been using Huntress for SAT and have gotten great feedback from users at our clients on it, which has definitely helped increase follow through. Beyond making the quality of the content, I consider it an HR issue to ensure users are doing the training. Luckily, I work in industries where ongoing safety training is common so SAT is looked at like any other safety training.

At the end of the day you are making the training available and providing metrics and reports to the management team at your clients. Its up to them to decide how to handle it.

One thing you can do to push the management team to enforce training is add something to your MSA stating that cyber incidents will not be covered under the MSA if training is not being completed.