If you are going to be a fleeter in the game, then you need to attack peoples planets/moons. If you are gonna do that, no matter what the speed, you need to make sure your attacks land while the player is offline, otherwise its a waste sending your ships.
It should be easier to check on players planets to see if there is any activity. I like what Antigame and Universeview have done and have made it so a players planet coordinates pop-up when you click on their name in the galaxy view. THAT SHOULD BE SOMETHING THATS PART OF THIS GAME! You should not have to reach for addons to get necessary info like that. I dont want to use addons, i want my ogame page to look as original as possible, but it is something of great necessity to know the activity of a players planets throughout the universe.
Ogame needs to add that into the game. Afterall they are making a lot of money from fleeters, so why not make it more fun to fleet; More successful hits = more fleeters enjoying the game = more players staying not quitting and henceforth more profits I will most likely spend much more money if fleeting was easy and fun as spying, finding something you would like to hit for profit, and then quickly checking other planets for activity to make sure that player is not online, and send my ships. Once again, i dont use addons, but that is something very necessary, to know a players activity on other planets.