the men admiring themselves on the water

I have really been fascinated when I read William B. Yeats’ poem named “The Old Men Admiring Themselves In The water” which seems too short but includes more than what it looks in terms of meaning. Here, I tried to analyze his great but seeming little poem in terms of the physical characteristics of the poem,literary devices used in poem , emotions I have been felt by these literary devices,meaning of the poem and finally Why I chose this poem to analyze .
Firstly ,I analyzed the rhyme scheme of poem as a only stanza and I found it one of the most unfamiliar rhyme scheme I have ever seen.The rhyme scheme is abaccbac which dissimilar to other works we studied on up to now.The meter is also different from what we have seen. While the third,fourth,fifth and seventh lines are written in iambic tetrameter ,the first lines have nothing in common but the sixth and the last line has a common meter which we call dimeter.I actually do not know what to call for meter used in the poem .
Secondly ,As I mentioned above the poem has hidden meaning or message that poet gives us via literary devices.We can see aliteration,metaphor and similes used in poem with ease.The first literary device I found is the usage of hands and kness as claws and old thorn trees that similes used to give that resemblance.I actually did not still understand how they are similar to each other for the similarity of claws and hands but I think the usage of old thorn trees and knees is clear for me to understand that the poet emphasized on what happens to trees and kness by the time.As time passes people get older and they get to be twisted like the old trees . The second literary device is a metaphor of time in the sixth line, the water refers to time as it is used as a continued progress that makes people like twisted old thorn trees and which changes everything .And I am not sure whether it is a metaphor or not but I think the word “beautiful”refers to youth that is drifting away and leading