Nice photo certainlysyrup, perhaps i would look for a bit more visibility to the detail of the buntline part.
Moreover, if i assume that you have access to your pole (from the top side i guess), you could have formed the buntline hitch in your hands first, then at a second instance, turned the upper part of your eye to a munter configuration, in TIB fashion, and finally pass the two turns of the munter through your host object.
It is essential, that the crossing knot part of the munter hitch, should always be formed as a direct continuation of the SP, exactly as you show it, in order to absorb most of the load, and the simple turn of the munter, should be formed as the returning structure direct continuation, which completes the knot with the clove part.
This also stands for some munter based bowlines that i have tested.
I'm thinking the backhand hitch as a good option to secure a boat to a ring-like, anchor point, in order to avoid the constant rubbing/friction, between the rope and the metal part of the ring that might lead to rope fraying and damage in stormy weather conditions, compared to a fixed loop (bowline) approach.
However, if the clove is considered to be a tough component at extreme loadings, in terms of jam resistance, even when formed at a stage where less tension is expected, one might always finish the second part of the knot with just a simple bowline.