What is the recommendation for modifying the User table in my application? I need to track more information and is currently utilizing a separate table and then linking it to the user table.

I assume you are talking about SFSUsers, the RBS table. In that case, I'm doing exactly what you are doing: using another table and linking them. Otherwise you are likely to run into problems with SF updates, as the DDT package will "fix" your changes whenever they make changes to the RBS tables structures.



You can make like easier on the development side by creating a BO to your linked table, add custom properties to the SFSUsers table, so from your application usage, it is just a single BO to deal with.