NEW YORK (ETF Expert) --As long as interest rates remain low, excess money eventually moves into riskier areas on the spectrum. Higher-yielding bonds, convertibles, preferreds, stocks -- they all benefit.

Of course, if fewer people buy Treasuries because they pursue greater risks, the Federal Reserve must continue to offset waning demand. Is $85 billion per month enough? It better be.

Consider just how far the U.S. Fed has been willing to go to keep respective interest rates artificially depressed. Chairman Ben Bernanke has been serving up 0% target rates for banks for more than four years, while currently supporting the largest "print-dollars-and-buy-Treasury-bond" program ever.

At this point, in fact, the vast majority of the developed world's central banks have chosen to follow America's lead. Mario Draghi hinted last July the European Central Bank would purchase the toxic debt of weaker eurozone member nations. The Bank of England has its program of bond asset purchasing as well as additional credit easing measures.

Meanwhile, Premier Shinzo Abe is already winning accolades for getting the markets to depreciate the yen by 20% and for encouraging the Bank of Japan to install its own open-ended asset purchasing plan.

With the S&P 500 on a seven-week run and sitting a few percentage points below all-time highs, the emergency room procedures clearly engender greater confidence in stocks. Indeed, European and Japanese equity markets have benefited as well.

It doesn't seem to matter, however, that the extraordinary measures have not been all that successful at reviving various economies. Investments, yes. Economies, no.

It follows that there may come a time when ultra-loose monetary policies by themselves will not be enough to juice investor returns. Corporate profits? They're contracting. Outlooks? They're noticeably hum-drum.

Nevertheless, the rationality or irrationality of uptrends should not determine whether or not you participate. You can ride an irrationally exuberant tidal wave like Garrett McNamara. You just need an unemotional plan for when to exit for the safety of the shore.

My clients have been invested in a wide variety of ETFs. At the same time, there are investors out there who want to put cash to work, but don't want to get burned from the get-go. In order to do so, they may want to incrementally purchase into funds that are less than 7% above a 200-day exponential moving average. In that manner, they can avoid purchasing something that is extremely overbought on a technical basis.

Here is an example of what I mean: Let's say that you see evidence of a recovery is residential real estate. Let's say that you think a natural extension of your observation would be to invest in homebuilders via iShares DJ Home Construction ( ITB - Get Report). You'd be getting an investment when it is 22% above a 200-day trendline. Statistically speaking, investors don't tend to make a lot of money when they buy an ETF that is 22% above an exponential moving average.

In contrast, there are a variety of investments that have are less likely to experience a bearish pullback of 20 percentage points before finding long-term trend support. Vanguard High Dividend Yield ( VYM - Get Report) comes to mind. Granted, it, too, may be ripe for a pullback. Yet as long as VYM remains above its long-term trend, you can continue surfing like Garrett McNamara.

In truth, it may be wise to simply wait for a 3%-4% corrective period before getting on that surfboard. Assets clear across the stock spectrum are overdue.

By the same token, when you do choose to "get on," you may feel a little less exposed to the elements with funds like iShares DJ Pharmaceuticals ( IHE - Get Report), Global X Super Dividend ( SDIV - Get Report) or iShares High Dividend Equity ( HDV - Get Report). Each of these funds are between 4%-7% above a respective 200-day, where the percentage drop to support is not outrageously steep.

This article was written by an independent contributor, separate from TheStreet's regular news coverage.

Disclosure Statement: ETF Expert is a website that makes the world of ETFs easier to understand. Gary Gordon, Pacific Park Financial and/or its clients may hold positions in ETFs, mutual funds and investment assets mentioned. The commentary does not constitute individualized investment advice. The opinions offered are not personalized recommendations to buy, sell or hold securities. At times, issuers of exchange-traded products compensate Pacific Park Financial or its subsidiaries for advertising at the ETF Expert website. ETF Expert content is created independently of any advertising relationships. You may review additional ETF Expert at the site.

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