Join Date: Jun 2013
Location: Northern Alabama
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Re: O'day Mariner or Siren 17
I've never seen a Siren, but I'd bet it is a good little boat and might meet your needs. I know the Mariner is a good little boat; I own one.
If you are going to tie your boat to a dock, you probably will want a boat that has cockpit drains, or you will need a bilge pump. Pre-1968 Mariners don't have cockpit drains.
Assuming all else about equal, like price, condition, trailer, motor, my deciding factors would be:
1) the level of support I get from the manufacturer and the owners' association. The Mariner has a very helpful and supportive association, good source of parts (DRmarine.com), and is still being manufactured (Stuart Marine).
2) the local population of Sirens and Mariners. For New Jersey, the Mariner Class Association lists 52 members and 3 fleets.