If their at least settled down enough to get them caught, I would spend 2 or 3 days putting a halter on them and just tying them and let them fight the halter for a short period each day (if you have the time do it twice a day before each feeding). Once they stop fighting the halter, I would start rinsing, blowing them out and tying for a short period of time each day. Working with them, once their not scared out of their gourd, seems to tame them down pretty fast and you are steadily moving them forward at a slow pace.
We started with commercial steers that were never worked with, picked them out of the herd, run through the scale, load on a trailer and hauled home about a 10 hour drive. we would put the halters on them in the shoot before they went in the trailer. Once home we would put them in a 12 *24 pen and just feed and talk to them for a couple of days. Once they settled down enough that we could get a hold of the halter rope, the boys started tying them for about 15 minutes and then turn them loose and feed (we would take the halters off after about the second time of tying). After being home for 5 days we would get them into the wash rack and start rinsing and blowing on. (did not worry about getting them clean as much as getting them use to being handled) You keep your distance as to not get kicked (some do and some do not) by the third or fourth rinsing they usually just stand there and let you rinse comb and blow on them. Now some take a little longer than others and with some you have take smaller steps each time, but you are gaining ground every day. It is a slow process but as long as you continue to move forward you can have them more than ready in a month.
We usually do everything with them before we feed, this way once we are done they get a reward.
