What Phil & deerlick said.17' Thor built local,4 degree bottom with a 90/60 merc jet two stroke.My 18' LT alumaweld 6 degree bottom has worked out just fine for all those systems you have listed,it's just a little heavier then the Thor.I have the 115/80 jet yami 4 stroke which is nice when runnin out @ John's river and the halis.Good luck,
SZ