I need an RC Boat to use as a bait boat. The boat should be able to carry 500g (towards the stern) ARF if possible.

Ashim.

ashimda sir: why don't you build your own Boat from Foam board???   

Mainly because I'm lazy.    Seriously time is a factor, and if I were to start now, Angling season will be over before I complete the model.

you can build boat within 5 hours using 3mm foam board and there are plenty of plans available for boat in the net. or you can search Roopesh sir's thread he has done many boats using simple method. 

http://www.rcindia.org/boats/make-a-simple-boat-and-rcyit-in-three-hours/

http://www.rcindia.org/boats/its-my-pp005-the-police-patrol-cruiser/

http://www.rcindia.org/boats/its-my-vosper-perkasa-the-british-f-a-t-b-of-ww2/

http://www.rcindia.org/boats/its-my-virgina-the-super-race-cat/

http://www.rcindia.org/boats/its-my-hovy-black-cat-the-rc-hover-craft/