Ideally you should sell it at the higher price when you last bought it for you to have profit. If you are patient enough to wait for the highest price then selling it in the future time. There is no really specific time. It just need a good timing to sell.

I suggest you to try your luck in Ethereum, Monero Ripple and Zcash. as you didn't mention in which coins you invested so I could better elaborate it. Anyway just remember some altcoins deliver slow gains and some deliver comparatively fast but altcoins do deliver profit.

Bitcoin is the best option for investing in the market of crypto currency all the time. Bitcoin is the leader of the market. It has been seen that the altcoins follow the bitcoin trend. Increase in the price of bitcoin leads to the increase in the price of altcoins. So invest in the bitcoin first, and then go for others.

I think that the campaign bounties need to be seen as an additional kind of earnings and do not spend too much time on it. A good sleep for a person is more important than working on wear and tear.

There is no doubt so many scams in the space but to classify Ethereum as one is a very wrong, do you think it would be scam and SEC won't have called all the developers of Ethereum into order just the way Bitconnect was handled and again even if it is a scam then all the ICOs listed on the platform would automatically turn to scam because their foundation is very weak.

Ethereum has long been a reference for sale and purchase transactions for new altcoin and I have never experienced and heard information that ethereum is a scam.
it may be just an individual mistake that results in him being constrained.
hopefully this news does not and does not become a reality, waiting for more clear and accurate information from other colleagues

Yes, Monero is anonymous and a cheap transaction fee coin. But more importantly, most mining softwares, add-ons, extensions, website etc. mine Monero and then convert it to Bitcoins and other crypto currencies. So in that way, it will always be in circulation and use. As far as how good investment it is, I think it might give you average returns, but don't expect any magic from it. Zcash, Dash etc. might give you better returns in the same category.

Investors do appear from our dear hunters who have gathered some good experience in the field and later have some money to invest. I  believe most of the ICO investors have bounty hunters being a greater percentage. It is interesting to see hunter who come into crypto with no or low experience but in the end they become very experienced. I salute hunters a lot for the selfless enthusiasm they put into various projects.

If I can predict 3 potential altcoins, I will pick respectively Ethereum, Ripple and the last one is Litecoin. I kind of appreciate three coins, because you know that each has their own thought about coins, I do likewise, I am using 3 coins above and actually I see all of them huge potential in the upcoming few months, the demand is also increasing significantly. In general, cryptocurrency is such a big market and especially it characterises extremely volatile, thus it’s pretty hard to predict exactly what coins can fluctuate well.

Definitely number 1 thing. If they do not have working app, you are gambling with possibility they will never figure out how to make it happen.

But there were projects who didnt have working product and yet they manged to figure it out once they got funding.... but that I would say is purely coincidental. So yes working product at least MVP is a must. My research on 120 ICOs showed that only 22 out of 120 projects had a minimum viable product in place when they launched their ICO. Quite alarming don;t you think? In a real world they could forget about any type of funding.... maybe  feasibility study grant from the government up to 50,000 USD, but that would be it. And yet they raise millions of dollars.

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A new exchange is about to be online on 5 march 2018 , with demo working right now. It's bitpaction.com . Their own ICO is BPS.
Maybe you can take a look on their site and program. Looks very promising in my opinion.
All this started from the idea of a special crypto exchange.
I just looked at their whitepaper and their token sales conditions and bonuses and seems to be a good investment.