: Station 1 is .124 8 is .134, and 4 is at zero. What I get out of it
: is I would attach 1 and 8 using the aforementioned heights and
: station 4 at zero? 1 and 8 being the only ones attached. Seems
: like there is right at 4" of rocker.

There is about 1.5" of rocker as based on the offets and computation below. Read the link again that I posted in this thread,
and you should be able to understand what's going on.

Sea Rider ....Section 1 keel is .124 = 1.5" (38mm)
Section 8 keel is .134 = 1.6" (41mm)
Section 4 keel is 0.0"

Therefore, you have approx. 1.5" of rocker at sections 1 and 8 which are at least a couple of feet back from the stems.

Look at the link I posted earlier and note how the "Sea Ranger" section 1 and 8 were placed 4" above the baseline (strongback) even though
the offsets show 1". You don't want the keel low point of 0" to be on the strongback, but rather at a working distance above it.

If the "Sea Rider" section 1 and 8 keel are arbitrarily placed 4" above the strongback, then the keel low point 0" must be placed 2.5" above
the strongback to retain the designed rocker of 1.5".