I have owned 1 IRB and currently own a 4.2m RIB that I use mainly for spearfishing the East Coast of Australia. Great little platforms for what I do and they punch well above their weight.
I am soon to be buying a 5.8m RIB so my family can enjoy the water as well.
I have rebuilt my current boat and modified it substantially.
From rebonding deck to hull, new transom, foam filling, crack repairs, puncture repairs, custom gun rack, custom eski platform, new fuel system including a custom 46lt fuel tank, water trap and fuel filter and 10mm fuel line, rewired, nav-lights and light bar, seat refoamed and covered, new steering.
I have been itchy for days, annoyed, frustrated and ticked off. But most of the time I have a big old smile knowing I will be back on the water the following weekend.