Automating creation of public teasers

I love the power of S2Member but figuring out the best way to approach things can be a challenge!
My client wants to provide public teasers of all posts on the homepage and the category pages. When a non-member clicks on a post, he wants the teaser to be displayed with the notice that they have to login or join.
I understand that I need to use conditionals withing the posts to to do this (rather than using the restrictions page) and I have that working on a couple of posts. However - we have a big backlog of posts to update and I need to set this up to be as simple as possible for the client and his writing staff to update on a regular basis.
Can someone point me in the right direction?
Thanks!
My client wants to provide public teasers of all posts on the homepage and the category pages. When a non-member clicks on a post, he wants the teaser to be displayed with the notice that they have to login or join.
I understand that I need to use conditionals withing the posts to to do this (rather than using the restrictions page) and I have that working on a couple of posts. However - we have a big backlog of posts to update and I need to set this up to be as simple as possible for the client and his writing staff to update on a regular basis.
Can someone point me in the right direction?
Thanks!