The largest that I could fit on my 500 was a Ocean Master 3.9 by Highfield. This is an alumunium hull tender
with a center counsel. If there had been one available I would have preferred an AB alumunium tender
rather than a Highfield as I think they are better finished but the Highfield is OK. I put a 50 hp Honda
on it which I would NOT suggest. Use the 40 hp Yamaha as it can be serviced anywhere.
I do not think that there is any large tender in fiberglass
that will work with the capacity of the davits
is simply much too heavy if you go as large as possible. I think the capacity is about 66o pounds. With motor, fuel
, toys and tender.a fiberglass tender you could be way over the weight limit.
Be sure to upgrade your lines to poly covered spectra and use shackles to connect the lifting lines to the tender. Make sure your harness in the tender is spectra also. Do not use the clips provided by Lagoon
as they are prone to failure if the tender fills with water
from a following sea or if it collects a lot of rain water
. Use very strong shackles to attach the lines to the lifting harness. The factory provided clips bend and the tender will be lost
or damaged. I know as it cost $22,000 to replace a tender lost
due to weak clips.
I also had an extra set of harnesses made to go over the davits and to connect to the lifting straps in addition to the shackles. I have doubled or tripled the holding capacity of the factory system as it is totally inadequate.
I hope this helps.