The positioning was made to suit the safety of crew and passenger movement, while keeping to the build lines of the trawler.
The interior grab rails needed to be fastened to the fixed storage unit, to securely perform without risk of being a damage or annoyance. The movement in location left an extra grab rail needed, for the counter and cooker area of the galley. These interior grab rails were white cap teak, available from Amazon at under 20 euros.
The fixtures of the interior grab rails were done with drilled holes from the handle end to the foot end and then screwed into place. The other option was to drill from the storage unit into the grab rail feet. Wood oil can be applied to protect the wood colour.
The exterior grab rails were fixed with a drill screw and sikaflex, over the strongest mounting points, to avoid splitting the fibreglass. Then polished clean, clear for cruising speed at optimum anytime. To your seats, its approaching.