There ARE guides etc,but people like Jean-francoise Helias will charge you 100 quid+ for a days fishing whereas you can turn up at a venue for yourself,hire rod,reel,bait etc and fish for 15-20 quid(the prices have rocketed up,I used to pay £5,but theres a lot of IGFA records on the water)A british guy JOE TAYLOR a few years back got a 400+Lb fish on the lake,took 7 hours to land if I remember correctly,theres good sea-fishing in the south for Giant trevally,shark etc,but I prefer coarse so I stayed on the lakes
http://www.megafishingthailand.com/content...category/17/41/