On my solo 3 wk trip to Mex/Baja last year, I bagged about 1500 pesos into two baggies. I then removed each small tank body panel on my R1200GSA, and taped it underneath and re-installed. Only came in handy once, as I was able to manage mostly using ATM's. If I remember correctly, I had small stash with ID copies underneath the tool tray too.
I totally agree with most others too - inside US/Canada - I wouldn't have a worry and would not stash or hide $$.
2009 BMW R1200 GSA..
2007 BMW 650 XChallenge..
2004 BMW R1150 GSA (Gone..
"You think dogs will not be in heaven? I tell you, they will be there long before any of us." Robert Louis Stevenson