Tacking a H16 in those conditions solo is tough. You have to be smooth AND fast to pull it off without having to do the "y" turn.
What I have started doing this this to tack...
With speed, first center the traveler and really crank down on the main sheet and let it start to turn...
Ease the rudders into the turn playing a fine line of not slamming them and killing all speed but not wasting to much not turning..
Nearly head to wind I quickly let out about 2-3 foot of main sheet and as quickly as possible break off enough jib sheet to keep from pulling a wheelie but still holding the clew of the jib near the mast. to make sure the bows come around.. When solo and the winds honestly above 18 mph with heavy wave action you need to be sure to crack the main off and be ready to not let the jib fully backwind while still tightly cleated in tight on the "old" sheet.. It will be harder to uncleat, and your weight on the back of the boat will start a wheelie causing you to have to most likely drop the tiller to race to the front of the tramp to save... Killing the tack.
Once certain you aren't going to wheelie a quick tiller extension switch all while increasing the pressure to keep it turning smoothly, then attention back to the jib.. Trimming it as needed to get the boat moving forward on the new tack.. Once moving attention goes back to the main. Unless you find the boat isn't wanting to pick up speed but instead wanting to round back up... If this is happening quickly let out more main until the jib has you moving and you can bring it in smoothly. Sometimes if I know wave action is going to really slow the tack.. and I am traveling out to depower anyway once tacked... I will try to let the main traveler down at the same time I let the main sheet out while nearly or just past head to wind...
As far as weight balance... The 'perfect' situation is "roll tacking" yet this is tough with so much to do and think about during a heavy air solo tack. A heeling boat wants to go to windward.. So it pays when starting the tack to let the boat come up just a wee bit just as you begin the turn.. With crew I hang out on the old windward/new leeward side as possible to keep the boat turning keeping wetted area down, weight near the rudders as much as possible for as much of the turn as possible. It also makes it easy to keep the tiller pressure smooth and steady when you don't move around much until the tack is essentially complete.. Solo honestly I prioritize sail management and think very little about where I am putting my weight other than making sure the shiny side stays down. I think though given the order in which I do things tends to keep the weight in the right place.
It really took some practice to get it right, and I still miss sometimes.. You really need to practice quite a bit in lighter air(5-10mph) and think about all the things which change for heavier conditions. You really need to be able to not only just complete tacks in light conditions, but hammer them out really quickly and efficiently to be able to have any chance in heavy air.
slow and smooth is faster than sloppy and fast.
Learn the "Y" turn because you are going to blow a tack.. As they say... It happens.. Lets say you get just to head to wind and the boat stalls... If you have crew all they have to do is pull the jib clew into the wind to 'backwind" it, and you will be surprised how quick it comes around unless you are totally stopped.. When solo you just need to be quick to realize you aren't going to make it and reverse the rudders and push the main out quickly to 'backwind' it.. When it is blowing the boat will start moving backwards quickly.. Just make sure you let it come around far enough before trying to take off again...
Sorry I don't have any good solo tacks uploaded yet... But here is what not to do..
http://youtu.be/vm4iAiItVaMNote I headed into the tack at low speed, don't use the leech of the main to make the boat turn... Then there is enough wind to get the boat moving backward quickly even with the sails luffing.. About the only thing I did really right was minding the tiller.. But still.. You see the result. Boat speed is your friend..
Righting the boat...
I am currently 200 lbs and quite regularly right solo without assistance (I am also 6'5" which helps) It is matter of getting the boat turned just right into the wind so the water can wash off the uncleated sails, and the wind can help lift them up.. This of course in conditions with enough breeze to help me.. Sometimes if I get knocked down on a puffy day I just have to wait for the next puff to come along before it will come up..
I have a couple loops of line I keep on my righting line. They are "tied" on to my righting line with Prusik loop... This allows me a strong adjustable hand hold and an easy way to hook to my trapeze harness to hang out and get everything just right should the boat not want to pop up right away.