Protecting the outriggers

[Skyedriver]

Recent purchased Chimaera has the original outriggers which although solid have quite a bit of surface rust on them.
Someone in the past (probably the same guy who bypassed the fan switch) has put underseal on what I suspect is the visible half. I had thought of running emery paper around over the top to clean of the rust then a coat of something but there just isn't the clearance for a brush.
So I need a way of coating them sufficiently around all 360 degrees, and probably a spray.
I would even consider fully filling the upturned U of the floor with wax if that'll help.
Short of lifting the body, what has been found to be the best method of protection.
Thanks

[Skyedriver]

The write up on the other thread is very good, I don't often read a thread through from beginning to end.
The Dinatrol kit looks a bargain but I'd need my compressor and its 370 mile away
The Dynax that you used, is it air fed also or in a can?
Cheers