12" Diameter Inflatable Tube
- Use a soft wax pencil or a soft pencil that will not leave permanent marks, scratches, or scars on the
surface of the boat.
- Only use glues, adhesives and surface preparation chemicals in well-ventilated areas with the proper
safety gloves and equipment.
To attach D-Rings:
- Before inflating the boat, review the diagram at the end of these instructions to get an overview of D-
ring placement. With the boat deflated, review where you are going to locate your D-rings, then inflate
the boat before you begin installing the D-Rings.
Find the center point of the boat from bow to stern on each side tube. Place a mark at the top center of
each side tube. These marks should divide your boat in half.
Looking down at the side tube, picture an imaginary centerline running down each tube lengthwise from
bow to stern. The imaginary line divides each side tube in half. Place a mark at the intersection of the
imaginary centerline and the mark you created in Step 1. You should now have a cross, marked dead
center on each top tube; these are your starting locations.
Next, designate which end of the boat is to be the front, or bow, and which end is to be the back, or
stern. We generally designated the end with the inflation valves as the front, or bow, because it is the
end that you would nose into shore when docking, and allows for easiest access to the inflation valves.
At the outboard side of your boat, place a framer’s square on the floor with the long leg vertical. Align it
with the cross that you previously marked on the top center of the tube in Step 2. Place another
horizontal mark where the framer’s square makes contact with the side tube. This is the outboard side
quadrant of the side tube (the three-clock position in a section view of the side tube). Draw a cross (+)
at this location. This intersection is the location of your first D-ring.
From the outboard side quadrant and from the top center of the tube, measure from the mark you
made in Step 4 (this will be 19”) toward the bow (front). Place a line at each location (top center and
outboard quadrants of side tube).
Place a framer’s square on the floor with the long leg vertical. Align it with the two marks you just
measured forward toward the bow. Place another horizontal mark where the square makes contact with
the side tube (now creating a +). This intersection is the location of your second D-ring. You have now
located two center points for the first two D-rings (at the outboard quadrant). Repeat this process at the
inboard and outboard sides of each side tube (8 locations total).
Set the Oar Saddle on top of the side tube. The attachment straps extend from each corner of the Oar
Saddle at a diagonal to the d-rings. When gluing the D-rings on the boat, angle them towards the
center of the Oar Saddle. This angle is critical to maintain the Oar Saddle’s stability. If you deviate from
the dimensions noted in these instructions, the performance of your Oar Saddle will be affected.
Try to align the Oar Saddle between the D-Rings if possible. The interior straight edge of the Oar
Saddle should align with the top centerline of the side tube as shown below. You can deviate from this
orientation if you want to gain more adjustment by rolling the Oar Saddle inboard or outboard on the
side tube. See the following diagram for verification that you have marked your D-ring locations
properly.
All dimensions shown in the above diagram are for verification only. They should be taken after you have
marked out your boat using the written instructions 1-8. The Hypalon® material your boat is made with
stretches when under pressure, so the dimensions listed on the diagram above are to be used when your
boat is deflated to verify the approximate final D-ring installation locations.
adhesives and surface preparation chemicals in well-ventilated areas with the proper safety gloves and equipment.
