It is good to keep agreements fair, based on reciprocal page quality (or popularity).
Backlinks could stay up longer when the other webmaster knows you are in on the link exchange for the life of your URL. This commitment can be mentioned in email.
Fair exchanges with index or inside pages is a good focus. Links hidden in the back of directory should match the quality of the link swap reciprocal.
I like to keep the links listed on my directory pages to under 45. Google recommends a link list should be "a reasonable amount." [Design and content guidelines]
Not Founds! It is wise to fear not the end of the exchange. If a Not Found happens, as urls come and go, webmasters should take the time loss with a smile and remove the other's backlink. I keep these in my database for future reference. Example: Your database might look like this:
goodbet.com NF (Not Found)Apr1'17.
Gooooal! In order to achieve link exchange goals, one think that helps is to bath the work in prayer. It is good to visualize an amount of exchanges completed. A commitment to an strict action plan is effective.
FFC: Updates, Love, Self-control & Fast Surfing