it's a b1tch reaching back their for sure as I discovered when I used nuts for my sidekick mount.....which is right about where you put your DR mount I bet. My arm pits were bruised for weeks! lol
Now I'm thinking that spot behind the rear rod holders is reachable from the rear hatch. It's a popular spot to put a flush mount so it can't be that hard. One thing I should point out tho is the flushmount has to be put on an angle as close to the outside as possible, this keeps the nuts/bolts from interfering with the rudder lines.
I was trying to think of someway I could incorporate my rod holder tubes/scupper tubes and sidekick mount to make something that wouldn't require drilling, but I've thought about it so much it's giving me a headache, lol. I think I'll keep it simple, scotty mounts, I've used them for years and never had structural issues or leaks or had a mount fail.
I agree that handle could come in handy, I bought some oversize u-bolt 1" ram mounts, have debated putting one on their with the FF.
....just had a brain fart previewing the post. On my last yak I mounted standard scotty mounts sideways on the innerwalls (gunwhale?), could put one this way in the rear tank well, might be less intrusive to rudder lines, might take some thought as far as crate positioning that's if crate is to be used.