So after having another fish stranded in my overflows, I finally bit the bullet and made some screens for the top of my tank this weekend. Got the frames from Lowe's and the screen mesh material from BRS.
Now my tank is screened in. I can consider wrasses again, which seem to have a propensity to jump out of my tank.
Then I got my double saddle butterfly out of the overflow, where he has been for the past two weeks. I had a Naso living in there for 6 months one time before I realized he was in there. I have had many other fish go in over the years. Small fish usually eventually find their way to the sump, but larger fish are pretty much stuck. It is nearly impossible to get a fish out once it is in there. This time, I drained the overflow then used a net to get it out, but it was not an easy operation and the fish got pretty banged up. Hope he recovers.