[RichardElliott]

I chose the Autohelm ST2000+ for an Islander 28 of about 8,00lbs displacement, which is likely an overkill but the ST1000 is marginal. The 2000 also offers better features. I can''t see compromising for a couple of hundred bucks. Ours has been in service for more than two years with very ggod performance.If you are concerned about the ability of a unit to perform,pounds thrust is a published number which you can estimate as to the thrust to hold your tiller under strong weather helm.