I would not look threw 135+ pages for that info. How come every time someone asks a question the first answer is use the search function? Instead of telling someone to use the search function why don't people help them out and answer there question then maybe direct them to to other thread?

For a hobby that is looking for more people it does not seem very friendly to new comers or people who have questions.

To answer your question, I found a 440/3 prop worked well for me while I owned mine alot of people also used a x642 prop. Lipo's are a great upgrade for power. Some say the stock radio is weak and should be replaced I used mine for a few months with no issues. A turn fin on the other side helps as well. Make sure you seal all the wood and grease the flex shaft. I would also recommend taping the hatch to the boat to help keep water out and keep the lid on when you flip it.