What help do you need to mount your own skis?
Over the years, in the tuning/waxing/base repair side of things, many skiers and boarders simply needed a little show and tell to take up tools and supplies to take care of their own rides. Some clearly should never touch a tool or their boards and many are lazy or think they are too busy. Tons are simply intimidated due to inexperience or paralyzed by sensory overload.
The same seems to be true with marking and drilling holes in a flat board (aka a ski). I do think there are layout and drilling tool options not specific to skis that will work fine to aid with the accurate marking and drilling of tools. A lot of this is woodworking/metal shop 101 stuff and I'll bet there are more than a few craftsmen on this forum that get a chuckle out of the angst some express when they consider drilling holes into their shiny new boards and for the first time in their lives. Many act as if dealing with skis is right up there with brain surgery.
Anyway, like the other aspects of gear maintenance, we are trying to zero in more on providing aid, tools and supplies to assist with DIY binding and insert mounts. We have several options in the wings we are pursuing to add to our current ones and seeking input.
Other than hand holding, what more do you think you need to increase confidence and accuracy regarding drilling and installing inserts and bindings.