RE: Securing struts to plastic floats
Bump for the update up top.
As for the reinforcement issue, I decided to be a little bit different. I cut some thicker plastic, scuffed up this plastic and the float. I then used epoxy and sandwiched some fiberglass between the float and the reinforcing plastic. So far this seems to be working well, the screws are holding after a couple of flights and everything is tight. Currently, I've only reinforced the front part of the floats. The back struts seem to be holding in the plastic fine. I think the back of these floats have thicker plastic, and there's less stress and vibration on these rear stuts to shake things loose. I'll reinfoce these back struts later if problems arise.