Coho design has more than 30 years of experience in the signage and graphics industry focusing on commercial signage, illustration and custom boat graphics.. To magazine home page. how long does boat bottom paint last? by frank lanier. while death and taxes may be better known, there’s a third certainty in life many boat owners face that’s often viewed with just as much trepidation.. Branson boat design steel kits are designed on computer and cut very accurately by c.n.c profilers. this new technology enables a more efficient building process and up to fifty percent labour savings….