It's often hard enough to get ONE 30 ft attachment point, much less the 3 required for a dipole. A dipole is totally out of the question...
There is no reason that a tuner
wouldn't work with that
radio. The radio just sees an impedance at the antenna
connector - it doesn't really care what all is connected beyond
that point.
But adjusting an antenna tuner at full power can present
unfavorable impedances to the radio. Common solutions
are either to reduce power during tuning, or to use a
resistive SWR bridge that will act like a dummy load and
present a suitably low SWR while the tuner is being
adjusted. (You then have to switch it out of the circuit
so your transmitter power makes it to the antenna.)
Meanwhile, I'd encourage you to reconsider the use
of a dipole or inverted vee. You don't need 3 high
points - just one is sufficient.
I've used a portable dipole kit (and no antenna
tuner, sometimes not even an SWR meter) from a lot
of different locations, from the Australian outback to
ocean cliffs to mountain tops in Alaska, beaches in
Hawaii, islands in Maine, campgrounds, wilderness
areas, parking lots, and pastures in Nova Scotia.
Usually I just toss a rope over a tree branch, hoist
the center of the dipole, tie off the ropes on the
ends of the wires to rocks, bushes, tufts of grass, or
whatever is available, plug the coax into the rig, and
operate.
Sometimes it takes a bit of creativity: I have propped
the center of the antenna up on my walking stick if
there is no other support, or hung it between two rock
outcrops (in one case with a 300' dropoff between them),
or two piles of road gravel, or used a handy fence post, or
run the antenna wire along a hedge. (Running the dipole
along a barbed wire fence, however, didn't work very well.)
I can string it up as a sloper or vertical dipole (useful for
seaside operation) or an inverted vee, or even a horizontal
dipole strung between two trees.
Perhaps the most important point is that I don't always
know in advance how I am going to set it up, but I'll
figure out how to do that when I find a location.
For backpacking I only carry 25' of feedline, using RG-174.
Yes, I lose 1/4 of my power on 10m in that length, but
the ability to get the antenna up in the air makes up for
the cable loss. In practice my antennas may only be
up around 15' or so, depending on the available supports.
That's still enough to make contacts.
The dipole kit has wires cut for each of the pre-WARC HF
bands, 80m through 10m. I can add whatever set of
elements I want each time I set it up. Sometimes when
time is limited (like a lunch stop while backpacking) I
only put up one band, while if I'm staying a while I might
set it up for all 5 bands. That allows me to switch bands
without making any changes to the antenna, which can
be very convenient in the middle of a storm.
That's not to say that the dipole is always the best portable
antenna, but, having used the present dipole kit for ~40
years, that's what I would choose if I could only take one
antenna. Its small, light, cheap, efficient, versatile, and
usually doesn't require a tuner (depending on how sensitive
your radio is to SWR). I pre-cut the wires years ago in a
local park, and now just string them up and use them.
These days I have larger kits using RG-58 for Field Day,
emergency service, and other uses when the small size
and light weight isn't as important as it is for backpacking.
Here is my
backpack dipole kit.
And
large versions of it.
Here are
some videos of setting it up. (I'm moving relatively slowly in
these for the benefit of the videographer. This
summer I'll try to to it in a 1 minute video.)