I got a NQD highwind and it leask from the shaft on the transom, sealed it with some silicon, and now its pretty water tight..
infact there were no ingress of water after 20mins in the water.
but the boat is heavy plastic, so you cant really add too manythings to mod. just threw in a 480 size motor. wonder if it gets any better.
how many cells do you guys use on a 480 motor?
i have been using 2 packs of sanyo AA size 7 Cell in parallel to get 4200Mah.
lasts about 10-15min

but i think i do have a heating issue. coz sometime after running it a while, the boat does not respond and sits dead in the water.
i need another to do reovery.