For an even cheaper alternative if 'MOD rocket launchers' aren't your cup of tea, then Penn velcro rod holders are worth a look. Can fit on the top of the A-frame or stainless-steel hand rail. The base of the rods would need to be secured when underway though. Details here: http://www.tacklebargains.co.uk/acat...il-Holder.html
I just use the rod bag, even cheaper
Looks Slow but is Fast
Member of the ebay Blue RIB cover club.