Printing forms on large graph paper might be a waste of money:

What I've done many times in slightly similar situations is use one pce of small graph paper and use layout lines that will re-orient it around your intended form/template size.

For example, if 8.5 x 11 in graph paper is used, it's rare that kayaks are 17 in high and semi rare that they are wider than say in the high 20's wide: that's only three [or say 4 at the simplest] placements of the graph paper to draw the largest form if say you used layout lines for the centreline, and say a 6" layout grid on the original or on some large pc of paper.

And then just pinprick [or shaped lead, or transfer paper] thru the one pc of graph paper. It'd be rare that you'd use the same, or close to the same hole so it'll last for many go-arounds.

So if you make a layout grid of 6" or 8" squares, it's easy to orient the graph paper: cut 2 sides of a small [2 grid divisions or so?] equilateral triangle over the intersection of 2 lines that you want to land on the 6" or 8" grid in 2 diff places [or more if you wish], fold back the triangles and you can easily line the small grid exactly where you wish it to be. Mask tape [or light spray glue] in place, make all the points you can and then reorient.

If you only do one side [and then flip and trace], you'll be amazed at how few times you'll have to reorient that one tiny pce of graph paper. If you use transparencies, you can flip the transparency up[ its 'nailed' in place on one side], reorient the graph paper, flip it back down and mark up until have to move the grid again.

If you do it enough times, you might get used to using a dial micrometer for this same approach and skipping the graph paper: ie large spaced grid lines that are spaced just under the full micrometer throw, then measure from those for your placements.

So several simple approaches.