Common modifications for a 30 HPtohatsu 2-stroke outboard

[John blue]

I've recently purchased a new 30tohatsu 2 stroke for my duck punt Jon boat.
I've already changed the prop 2 a13 inch stainless and I am considering doing further modifications to the actual engine itself Blockhead etc possibly internals.
I've searched around my local area Victoria Australia and I'm having trouble finding anyone that has the knowledge and experience to point me in the right direction of which modifications are most important and what modifications commonly done that have results of any significant gain.
The boat isn't used for any sort of racing all I'm trying to achieve is as much speed as possible not asking for much haha.
The engine was purchased new this year in March don't care about warranty it was cheap anyway so if anyone has experience squeezing more power out of this type of engine I'm hoping you could give me advice that will stear me away from mistakes you may have made with your own modifications
Thanks in advance John

[charlie the wonder dog]

Talk to Ian Tate at TRE Motorsport in Heidelberg West, there's not many people who know more about the insides of 25/30 hp Tohatsus.
See this http://www.screamandfly.com/showthre...10#post2396210
thread for some of the part swapping that can be done between different year models