Honestly, I'm probably the biggest advocate of HOB overflows on this site.
The pros and cons of drilling versus HOB has been beaten to death on this site.
If you do a search for "HOB overflow" I'm sure a few heated discussions will come up that have very good, biased information from both sides of the fence.
I will say though I am now on year 2 with my home made HOB u tube overflow without break in spihon (flood).
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