I found a good spot. I took a photo. I planted a book. Then I got to work and realised I’d forgotten my USB cable, so I can’t upload the photo.
I’ll give you a description instead, but first the rules. Identify the location from the photo description, go there, find the book, post a comment here telling us where it is, and register the catch at bookcrossing.com.
So, the location is somewhere south of Sherbrooke, north of Rene Levesque, east of Peel and west of Bleury. The photo I took is of a corporate mural portraying the wine making process, painted on a wall at the back of a parking lot. Just east of the mural is a church. On the east side of the church is a sign that says “Minister”. Beneath that sign is a rock. The book is under the rock.