Hi Russ, I reckon your Tribute would get in OK, may just need to gun it through some of the sandier sections in case you bottom out in ruts and get bogged. Bear's Delica makes it in and was the first to actually get through all the way to the end!!
As long as it hasn't been raining too much and swell isn't too big, then you should be able to make it in without a snorkle

Once in, the speed run is actually pretty devoid of branches, etc. There are some along the leeward bank, but all pretty visible. There could always be something just under the water and it would be difficult to see, as the water is so brackish, but hasn't been an issue so far.