All the Youtube videos I have seen on ballasting casually gloss over how to deal with points and specifically that hardest of all points, the double slip. My hypothesis is that it isn't the ballasting itself that is an issue, rather it is the pre-wetting of the ballast as that seems to disturb the ballast and that's the very thing we need to avoid around points.
To set the scene - my peco 75 track is laid on DCC Concepts foam bed, not cork, and I have spent thousands converting the loft buying trains and dcc equipment so I was happy to splash the cash and use Deluxe Products Ballast Bond. It is pre mixed and dries matt, however even they suggest pre-wetting. So for my points I prewetted the track using an empty bottle of Ballast Bond filled with a strong solution of washing up liquid and dripped that on to the tracks first, to reduce movement of the ballast. If there was movement I carefully moved the offending bits before applying the glue and if I didn't like it I just let it dry again and redid the process.
Here is my first go using a DCC Concepts club tub ( Steam era, brown & grey) of ballast.
and here is another view now it has dried
I think the result is OK, and although time consuming I feel the time and cost are worth it to properly set off my expensive train collection.
A couple of other observations;
Ballast Bond doesn't create the hard shell you get with PVA which should make the layout quieter to run. I can't say it does for sure but it is no louder than it was and I notice the track bed still flexes with ballast on top and when I had to pick out the odd mis placed stone I noticed that the bond was more rubbery than PVA
It's theoretically possible to remove the ballast with hot water if needed but I have not tried this
It only took overnight to dry off as my application of water was much more targeted and summer is a good time for this and this stuff must dry quicker