I recoat using the originally applied tape unless for some reason I must pull it.
Usually it stays untill I have all coats on, up to 5/6 and sometime 10 if I'm rebuilding after a stripping.
A bit of care will prevent varnish pull up which is not usually a problem. In heavy areas I use an Olfa type knife, the small ones, with a newly sharp blade to score the varnish. It is not needed to really cut through but just a score will help hugely if the varnish shows any sign of pulling.
Don't try to pull wet tape, allow it to dry, or the paper will come free of the adhesive making a mess.
I use only the 3M 2090 tape. It will last up to a week in solid Vancouver, B.C. sun. I do test by pulling a bit as the stuff approaches a week. If I know I will be longer I will lay some test pull strips in full sun and use those to guage if I need pull and retape. If retaping is needed I do it as the consequences can be miserable.
I have used the 3M 2080 tape and liked it too but the last time I went looking for it [last summer] , it was noted as discontinued. There is old stock available but the 2080 , although better , was not enough better to be a problem.
I have seen and used products competitive to the 3M 2090 and some were ok and comparable at a slightly lower price but not enough for me to change. I use about 20 rolls yearly so the extra cost is workable and I can be reasonably sure of what to expect.
You do need to know how long it, any tape, is expected to last out doors. The 3M is quite clear about that. If you don't use a long period outdoor tape there will be trouble getting the stuff off, sometime major trouble. I have seen a couple boats where folk used a painter tape intended for indoor use and they had a heck of a time removing it.
In southern sunshine I would expect you need to be more cautious than I about testing how the tape removes so it does not stay too long. Even the 3M has its limits.
Having a coat of wax on first will help removal greatly. Where I not been ahead on the wax I have later had to go after some adhesive residue. That was one reason I also liked the 3M 2080 as it did not seem to leave residue but if no longer available reliably then there is no choice, at least long term.
For some comparison my varnish takes about 100 hrs yearly and a really major can be almost 200 hr. Yeah , I do keep a rough track.