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hullinthewater,

You can always raise the motor all the way up no matter whether you drill the Green or Yellow holes. (or even the Red if you have the deeper splashwell)

On your year model, I believe the splashwell was designed to drill the Red holes for the "Standard BIA" mounting.
The Yellow and Green holes were for earlier models that had a shallower splashwell.

The first 17' hulls that had the deeper splashwell was about 1987 but could be even earlier.
See this members 1987 17' hull and view the comments at the bottom.
http://www.whalercentral.com/infusion...r_id=18198

The motor is mounted all the way down in the last photo and shows the standard bolt hole pattern which would have the Red holes drilled at the bottom.

As always, measure both the inside and outside of the transom before drilling any of the holes in this diagram.
http://www.whalercentral.com/articles...icle_id=82