Ok, I still haven't figured out how exactly xcart creates the wishlist id but I found out that the id is a session id stored in the sessions table in your database.
I've thought of 2 possible solutions to make it easier for customers to find each other's wishlists, if anyone has any input please share your ideas:
1. We can try to make a variable entered by the customer equal the session id.
For example this is the url needed to access the wishlist=
https://www.domain.com/cart.php?mode=friend_wl&wlid=0e1e55140213adf72asd1 e5ad021a04
What I was thinking of doing was having a form where the customer can enter a variable like a username (Hunter920) and then xcart would recoginze the username as the session id (if defined in a php file) and then present the wishlist.
or
2. We create a wishlist search, similar to the regular product search. Except the search would only search the mode=friend_wl files. Just as the product search has things like product title,etc that triggers the search, the wishlist search could have the persons name that would trigger and present the wishlist.
Feedback is much appreciated. Thanks