Powdercoat matter?

[onrecess]

I'm looking at Trackers. Seems that a Pro 170 or a Pro Team 175txw would suit me, I'm on a canal off of Lake Osborne Chain in So.FL. and I fish alone. Seems both go about 35 mph with the stock 170/50hp and 175/60hp according to mercury marine. The room when seated and fishing seems about equal. One problem:
My neighbor says the lime in the water will eat up an aluminum boat. Is this true? Would a Pro Team 175 with that powdercoat prevent this? I am planning on leaving the boat in the canal. Do I need to go fiberglass? Anyone have experience with this water?

[mrc.in.wi]

If it will eat an aluminum painted boat it will eat an aluminum painted lower unit

[Transom]

It ain't gonna eat the boat but if it is in the water 24/7 and not on a lift you will get staining on the hull and if you leave it for a long time you will get crud growing on it.

[TritonTRXV8]

I dont think its going to eat at it. Powder coating is pretty tough takes some pretty nasty chemicals to strip it off. Like said above likely leave a stain more than anything.

[Transom]

I will add that these days I would trust powdercoated tin anyday over glass if left in the water 24/7.

[onrecess]

OK, thanks.