Are you in Canada? Unlike the US, Canada has kept the 14 to 69 channel spectrum (as has Europe and Asia). The US cut the spectrum to resell those frequencies to mobile providers.
With the 4 bay one can customize the whiskers for the channels one wants. For example, the channels I like go from 19 to 39. I don’t need 14 to 18 nor 40 to 51. So I calculated what the average length was for frequencies between 19 and 39 and cut my whiskers for that range. Channel 19 requires whiskers of 11.8 inches (if I remember correctly) and 39 needs 9.5 inches. So I cut ten inch whiskers. The spacing is typically one half inch less than the whisker size so in my case it was 9.5 inches between bays.
Like you, I used wire hangers. If you make a mistake cutting the wrong length, another coat hanger doesn’t cost you much LOL. I bought a set of ten wire hangers from WalMart for $1.98.
What is nice about making cheap antennas, is that if you need more than one, you spend just another ten bucks. To give you an example, a friend of mine gets two thirds of his channels at one location and the other one third comes in four feet away. Who the heck is going to buy two $100 antennas for two locations? We made two db4’s; put the first in location A and the second in location B; joined them with a two dollar splitter and voila, he was getting ALL the channels at 100% for less than $20.
We didn’t have to try and finagle ONE antenna to place it in a compromise position somewhere in between the two optimum locations. Heck for $10, just build a second antenna and don’t worry about finessing the ONE location with ONE antenna. Spend the saved money on a Tablo.