I have been building boats and raced them for nearly 10 years i got boats from 100 cm to 190 cm with engines from 10cc to 35 cc both nitro and gasoline. and the only hull thats good are those made of fiberglas.ABS hulls is not worth a dime.
specialy the ready to run kits they are just junk.
you schould have bought the shockwave 36 a friend of mine got one some days ago and it runs just great .nice fiberglas hull and a very nice made strutt and rudders.its the best ready to run kit i have ever seen.
SO GET RID OF THE ABS BOAT AND GET A SHOCKWAVE 36