Ok.. so I am looking at the compartments with all of the rubber bands under the seats of my 2012.
Listed as #1 of the
New Owners Read This section.
I feel a little bad now...
As someone who previously owned a KLR650 for and was a member of the advriders forum at the same time (those two in combination will garner you a fair amount of abuse.. all beit fun and brotherly abuse), I am one of those that lives in fear of posting new things on forums for fear of someone saying "do a search before wasting our time and space", "google is your freind", "rtfm" etc...
I promise you that I did several searches, using both google with the "site:" switch and the fjrforum search, and using as many combinations of the words under, seat, storage, compartment, rubber straps, etc...as i thought logical. I never used "pillion", as it isn't a word i normally use, and i wasnt looking for the rear seat compartment alone.
In my defense, I did read the "New Owners Read This" section start to finish, as directed, when I signed up. But, #1 that you refer to was under the heading "The following mainly applies to the
2003-2005 FJR." so I read it, but didnt put a lot of weight on the info in that section as mine is a 2012
To my detriment.. it also says "(Read the whole post, there is info throughout for all years)..." But even though it says that, I guess I still wouldnt have put "U-lock" together with that spot, as I had never owned a U-lock before, nor had I ever owned a bike with enough space to carry one under the seat.
That all aside, and with the new knowledge you folks have so graciously shared with me eliminating the question of the two convex depressions ... the other spaces in there still look like they were made for somethign specific... so my thirst for knowledge, while lessened to some extent, still remains.