Roger Long wrote:
Well, I'm looking for some personal experience but thanks anyway.

The thing I have consistently heard about 5200 is that you shouldn't
use it on anything you hope to get apart again later.

I used Sikaflex 241 (a close relative of 5200 with similar strength)
to bond some plywood to the hull. The plywood was a T joint into the
side of bare fiberglass hull. Just an edge glued fillet of the
Sikaflex on either side of the joint.

When I tried to later remove the stuff it just laughed at me. I had
to cut the plywood into 4" wide strips AND use a crowbar with feet
well braced to get the bond to break for each individual strip of
plywood.

5200 has a well deserved reputation for not letting go. Yes, it has a
low hardness but for your application it won't matter.

Evan Gatehouse