Without commenting on the Navara fund (as I know nothing about it) I would suggest capitalising interest on an income fund was fraught with “danger” – mmm, too strong a word perhaps.
Really any form of income fund is going to have pretty much a relative “band” of performance if it is going to maintain the risk / return ratio at reasonable levels.
Let’s say (for the purposes of illustration) that an income fund aims to produce 9% PA and that it’s underlying strategy is reasonably able to achieve that with a consistent level of risk.
Year to year it might perform at (say) between 7% and 11% but it is unlikely to go higher then that if the risk stays constant.
If you capitalise interest you will start pushing the boundaries of the performance of the strategy and after a few years I would suggest you would be in a loss making position even though the fund may continue to perform as expected.
Capitalising interest is at best a (very) short term strategy in my opinion and I would discourage my clients from doing so on our funds.
Unless of course you reinvest your income into new units, in which case your return will effectively be the same as if it was a growth fund (of the same % growth/income) that didnt distribute anything