What's your opinion of this sea sonnet?

I would say all the L sounds availeth themselves to onomatopoeia, the "rolling, swell, still, alike, tells". Sigh! It works emotionally touching such regret and longing over the road not taken...the eternal sea washes over the poem with melancholy rhythm, as he recognises himself as past prime and there is no time to change his choices or path...seems like that sentiment was as prevalent in his day as now.