Here is some of the company boilerplate
The patented pistol grip handle with soft elastomer gives a comfortable cutting angle and secure grip. This saw features a simple twist-lock blade for quick and easy replacement and compact toolbox storage. This is truly a must-have saw For anyone who appreciates great hand tools.
HOW TO GET THE BEST OF PULLSAWÂ®
Start your cut by pulling the saw towards you without downward pressure; let the weight of the saw do the cutting. SharksawsÂ® only require 20% of the effort of a traditional push saw. Use long, smooth strokes. Do not use heavy pressure in pushing the saw forward in the kerf. Your SharksawÂ® will cut at any angle, even undercutting (From the bottom up]; just use long, smooth strokes.
HOW TO REPLACE THE BLADE
Turn the red knob to loosen the blade. Hold blade at its shoulder and pull from the handle. Just reverse this action to replace and secure the new blade. CAUTION: Always place the tooth guard on the blade be-fore removing the blade.
CAUTION & CARE
Extremely sharp teeth. Use extra care in handling or replacing tooth guard. Wear eye protection as a general safety rule. Keep out of children's reach.
Here are a couple of photos of the pull saw I recommended showing how they can be used to cut gentle curves in plywood. This could be a great help to folks cutting thin plywood when making small boats.
Pullsaws 2312 or 2420 are great for plywood that is 1/4 inch or smaller.
Pullsaw 2315 is great for plywood between 1/2 and 1/4 inches.