Bike + Hwy 98 = Death wish + insanity
You can quote me on that.
It can be very dangerous. Timing does help. When we are on our 'road bikes' we never ride on the 'bike path' - I feel that is best left to walkers and joggers and those cruising on their slower bikes (what I like to call my "beach bike") We take our road bikes up 30A to 83 and on to 98. BUT we do it very early on Sunday mornings and we have mirrors and bells and helmets and lights and never ride side by side.
I jog, walk and take my 'beach' bike on the 'bike' path so I can identify with all three and all three have their frustrations and dangers. If you are walking or jogging, say next to your partner and someone RACES up behind you on their bike without warning OR with not enough warning (like saying it right when they are approaching) then it can not only scare the crap out of you, but it can be very very dangerous. One step to the left would leave everyone in a tangled mess.
The safest way to approach this is for those out for a fast ride to use 30A as early in the day as possible. If that's not possible then at the very least get a good loud bell and use in plenty of time to give warning. If I am riding my 'beach bike' on the path - I use my bell and if I don't see some sort of recognition that the walker/jogger heard me, then I use it again until I know that they know I am there. Those who are riding their fast bikes need to understand that you can't just go racing past someone - that's just nuts - you must assume the pedestrian doesn't know you are there until you have some sort of recognition from the walker/jogger - a look behind, moving over, etc... Same goes for "on your left" - gotta be said in plenty of time and loud enough so that people can move over, and variables like the breeze and traffic noises make the bell, IMHO the better choice. I always thank those on their bikes who give me plenty of warning, because so often, many don't.