you can deke out thru the small channel (head left coming out of painted boat) and into bargain harbor, it's fairly protected so you can always find some calm water to fish. you cannot get thru this channel at lower tides. we used to take a 24' boat thru it but you have to be careful, a small inflatable would be a breeze. you can get some decent fishing in bargain harbor and if calm bjerre shoal is close also. I'm assuming you have a small motor on your inflatable and aren't rowing. if you don't have a motor, check these guys out, they have 12' and up for rent .
http://sunshinecoast-resort.com/the-marina/motorboat-rentals/