Great info here as I've been considering adding one or two hybrids to my bag lately. Just started the research process and look forward to hearing your results from the 3H to 4H. I've often wondered if you can tell a great deal of distance between the two in the hands of a HH.
My iron set goes to 3i, but I have no confidence beyond a 5i. Thought at least try a 3H to fill that void.
A lot of ppl on here use evolvr with success. I took lessons from @iacas for a year now with success.
They have a system about how to practice and having one “priority piece” that you work on.
Search through the member swings. Look at the guys who use evolvr. Their swings look pretty good IMO.
You'll have one voice, giving you one thing to work on at a time