Under such conditions as exist in the "heart" of the nucleon, one could hardly expect an unambigous indication of anything - just "uninterpreted raw data". It tells us nothing about structure specifically.
We could just as well say the data indicated that the proton or neutron existed in one of three possible states. Certainly, to specify "tri-particleness", one would have to hit all three particles simultaneously with three different probes and be able to associate the resulting data with the specific probe particle.
This is impossible in principle(because of uncertainty relationships, the 'identity of indiscernibles' and any of a host of practical problems).
It could therefore be expected that one could not isolate an individual "quark" if it were a state rather than a particle ... but for the aforementioned reasons nothing specific at all is indicated by the data itself.
It may indicate anything which is logically consistent with the data - not necessarily an infinitude of possibilities, but enough to give one pause to reflect on the extent to which we rely on our minds previous content to construct a "readable" map of existence in a foreign territory.Quark data indicates something. If a 3-particle structure leads to the discovery and/or integration of new/old data, then by all means think in those terms.
Just be prepared to "jump train" on a moments notice.