Seat post-ez swivel or springfield?

[yumasdad]

Thinking about adding a removable seat post on the front deck of my boat. Would like something that is quick & easy to install/remove, with a flush mounted plate on the deck that I am not going to trip over & take an unanticipated swim-especially in the dark! I built a casting deck that I will be able to stow the seat & post under. With a 17" boast space is limited.

Was thinking either an EZ SWIVEL or a SPRINGFIELD.

LOOKING FOR ADVICE ON WHICH TO GO WITH.

Thanks in advance