RE: Just one more thing...evo deck.
OK, let's talk about your "tacking technique" as I already see a couple of "issues" here with what you have described.
First, if the board doesn't power up into the wind, you need to "power it" up into and slightly past the eye of the wind, using the power and turning force in your rig.
Use the power in your sail.
Get out of the footstraps and move a little forward on the board (but still well behind the mast foot)as you start into your tack.
Then rake the rig all the way back until the foot of your sail rests on the upwind footstrap.(i.e. you are raking the rig all the way back and pulling it in until it touches your back leg PLUS a little beyond the centerline to turn your board past the eye of the wind.
Try this.....it works, and your tacks will be crisp and you will be up through the eye of the wind quickly and powerfully.
Then instead of stepping forward on your board to (as you say)
"Once round the mast I also find it difficult to get that last bit of the turn which allows you to 'catch' the wind and move off in the other direction." just step over the mast and tuck your new back foot under the foot of the sail.
You will have your old back foot on one side of the rig (and the centerline) and your new back foot on the other side of the rig (tucked under the foot of the sail and over the centerline.) You end up facing the back of the board momentarily, with the mast between your knees.
Then step around with the new front foot (or at least bring that foot around so the side of your foot is touching the mast base) and then hold the rig in your new front hand (by the mast in the boom cutout) and "sweep" your sail out to perpendicular to the board. This will put you in the perfrct "T" position/alignment, ready to balance your rig on the mast foot, rotate your back shoulder back so that the rig rotates about 5-10 deg. and ready to sail off on the other tack.
Yes, others will tell you this is a crazy thing to do. but try it. I have several hundred students I've taught that will tell you how well it works.
It provides a more dynamic and powered turn, keeps you over the centerline of the board, prevents you from moving forward on your board so that the nose drops and you come to an unstable stop.
Give it a try and let me know how you get on.
If you need further clarification, just ask.
Moving forward and around the mast foot worked good on 12 foot longboards, but it's completely inappropriate for short boards as shifting your weight forward stops any forward motion and your board doesn't want to turn unless it's moving.
Hope this helps,