I wasn't there obviously but I was able to find a few things poking around the internet.
Partial Results from 1976-1984, 1986
https://ewrc-results.com/events/4443-lobster-rally/Apparently the NS Archive lists some highlight reels about the 1969 rally.
Lobster Rally
Format: 2 film reels (00:28:52 hrs.) : sound, colour
Filmmaker: CBC Television
Note: Highlights of the 1969 Lobster (Car) Rally in New Brunswick.
Production Company: Canadian Broadcasting Corporation
Broadcaster: CBHT
Access: Open for consultation; written permission required from donor for use or reproduction.
Reference no.: CBC Television Nova Scotia Archives Location no.: Fc 398 399 Supplemental information no.: Mf241-01https://novascotia.ca/archives/nsfilm/imageite.asp?Start=1906&wbdisable=trueMention of the 1968 Rally
http://shell-4000-rally.org/4000_web/bios/bio_John%20Slade.pdfAbout a TV film called 'Rally Master', haven't found a link to it yet.
http://flatovercrest.com/2009/05/the-story-of-rallymaster-1981/