I/O vs. OB

[oldfielder]

I top out around 4400, which is really the bottom of my 4400-4800 range, so I may be slightly overpropped but I don't let it bother me.
As far as weight/wind resistance, you are probably spot on. I added a simple three sided enclosure this year to the t-top for a little break in November from the wind and I've lost a bit off the top. It's amazing how that little item changes things in the wind-even when docking.