Need to mount seat bases and do not have access to back side

I bought this boat several months ago and have been fishing out of my 14' flat bottom while I tried to get the motor going. Not done with the motor yet, but bought a fiberglass seat base for the passenger to ride on and and a adjustable pedestal like the one up front for the person in back to fish out of. My question is how should I mount these. It looks like the fiberglass pedestal will hit on 2 of the ribs in the boat, but the seat base will probably not. The boat has a aluminum floor that is carpeted, I would like to fasten the seats down without taking any of the factory floor out. What do you recommend? The pedestal is like the one on the front deck pictured. Maybe tomorrow I can take pictures of the new base and pedestal that I bought sitting in the boat.

Thanks,
Flintcreek

toggle screws

i second the toggle bolts.

Toggle bolts for sure. I used them to mount my seats and they are just as strong now as when I installed them

Guys, where is the best place to buy toggle bolts? Did you use stainless steel?

Flintcreek

flintcreek said:

Guys, where is the best place to buy toggle bolts? Did you use stainless steel?

Flintcreek

Click to expand...

If you can't find them locally, here's a google of stainless steel toggle bolts:

https://www.google.com/#hl=en&expIds=17259,18167,25567,25984,26645,27007,27015&sugexp=ldymls&xhr=t&q=stainless+steel+toggle+bolts&cp=19&pf=p&sclient=psy&aq=f&aqi=g5&aql=&oq=stainless+steel+tog&gs_rfai=&pbx=1&fp=9f2370386c77b788