My first windfoil board was a narrow tail design with four straps and it took me a long time(2 years) to get in and out of the aft strap comfortably and consistently without touching down. In the process I learned a cool trick, when sailing in swell I move my back foot when cresting a wave using that weightless moment at the top to get the back foot in or out of the strap. It works silky smooth without touching down.
I am now learning to ride a wide tail board on more sheltered waters and I am struggling all over again with getting in and out of the back foot strap. Any of you race board folks have any tips for learning the wide tail dance? Thanks in advance!

The technique is simply a little push with the backfoot to get the board into going up and then move the foot in the strap. Getting out is the same. Important is that your board is going up as you unweight your backfoot, because that will give you more time to move. Getting in and out of the straps is easiest when going upwind, so practice that first and do downwind later. Especially getting back in the strap going downwind can be challanging / scary, but both feet in the straps is fastest (although the difference is minimal unless you have really good technique, the only one I've really seen going a lot faster downwind with 2 feet in the straps is Kiran Badloe, and he's one of the best in the world).

Tbh it also depends on what sailsize you are using together with your board, same as with normal windsurfing. Quite a lot of people use small sails on formulaboards when they start foiling. If you use a board with an 80+ ofo like a formula or PWA91cm board you need like a 7.0 (8.0 is better) minimum to be in the straps comfortably.

Then there's also trim, I dont know what board/foil you use, but when using a PWA racing foil like my Lokefoil Race or the 2020 starboard race +, the backstraps of a regular foilboard like the JP135 are so far backward compared to the front wing, getting in them is quite uncomfortable (personal experience).

If its the physical action of putting your foot in the strap that you're struggling with, practice first on the board on the shore and than on the board while keeping it on the water. Being able to move your feet without moving your weight is key. Maybe watch some "normal" getting in the straps instruction video too, the technique for extra wide boards is much the same, just more extremely executed.
@Indecent, keep your weight on your toes to counter the board from turning towindward. You are also having trouble moving your feet without moving your weight, thats why you have to keep your foot on your board. The problem you're having should already be very noticable with a normal board. Wonder how you've survived that foiling all this time lol.

An additional exercise for being able to put your feet in the strap is sailing around slogging or even foiling standing tiptoed with your backfoot. If you can tiptoe (and i mean tiptoe) your backfoot, even for a short time, you should also be able to lift it and put it down somewhere else without changing the balance.