Shows pride, as some of us do in boats (6)
I believe the answer is:
boasts
'shows pride as some' is the definition.
I can't tell whether this definition defines the answer.
'us do in boats' is the wordplay.
'us do' becomes 's' (I am not sure about this - if you are sure you should believe this answer much more).
'in' indicates putting letters inside.
's' put inside 'boats' is 'BOASTS'.
'of' is the link.
Can you help me to learn more?
(Other definitions for boasts that I've seen before include "Brags, shows off" , "Brags in praise of oneself" , "crows" , "Blows one's own trumpet" , "Brags, blows" .)