I do not know about Smart Net but I have experience with Trident Extruded heavy duty poly deer fence. The raccoons chewed through the bottom within 2 days of installation. The immediate solution was to install a single strand of electric wire about 7 inches off the ground to discourage the raccoons. That worked for a while, but the downside of this is that it creates a maintenance nightmare. The grass grows higher than the electric stand within 2 weeks, at which point you can't see it and can't effectively trim under it, which we did only once and concluded that it was a ridiculous enterprise, after cutting through the electric wire a couple of times with the string trimmer, and the time and effort is just too much anyway.
The plastic deer fence was our third attempt at deer fencing. We have moderate pressure and a small orchard, so I started with a 3D fence (2 electric strands of polywire on fiberglass posts, then one strand offset 6' from that), which they figured out within a year. The second iteration was a fortified 3D, with 4 electrified strands of polywire on the outside, about 18" apart, and 2 strands on the inside fence. Then one day I discovered a deer in the orchard midday, and watched him run through the fence, without breaking stride or disturbing the fence. As if it were a ghost. They are incredibly agile creatures.
So then I put up a 6' Trident plastic fence on T posts, alternated with much cheaper 3/8" rebar, topped with 3 strands of polywire to bring it up to 8'. I supported the polywire with the same fiberglass posts used for the 3D fence, drilling out holes in t-post pin insulators to support the posts. In one spot, the raccoons kindly ate a large enough hole in the plastic fence to allow the deer to scoot under it. About 18" was all they needed. Also, the rebar is not rigid enough; with the wind, the fence leaned considerably.
Chapter 4 in my deer fencing saga is underway, in a second small orchard. With braced wood posts at the corners and 8' T posts at 18' intervals for line posts (no rebar), I am stringing 2 feet of rabbit wire along the bottom. This will keep out the rabbits, as well as prevent the raccoons from chewing through the plastic. There will be an electric strand at the top of the rabbit fence, on offset T-post insulators, to keep the raccoons from climbing up and chewing through the plastic. Two feet will be high enough that the maintenance problem is eliminated, as I can easily mow under the electric strand.
The next layer is 4 ft of Trident plastic fence as before. That brings me up to 6 ft of barrier fence, which I think is all I need, all supported by T posts. Then to keep them from jumping over it, I will do as before, installing small fiberglass posts and two strands of polywire, which I already have on hand, to bring the height up to 8 ft. The cost for all of this (not including the polywire and posts at the top, or the wood corner posts, already in place) was about $1.50 per foot. I haven't priced 8 ft welded wire fencing on 10 ft wood posts recently, but that has to be more expensive, and a lot more work.
Turkey Creek Orchard
Solon, Iowa (zone 5A)