there's really no need to shoot for the stars with those Maco A-V-5/8 Lazy , I believe 10ft clearance is all thats' needed concerning those ground planes , had a friend that had one up right along side a 100ft pine tree , he was on a make shift 30ft pipe to pipe push up, so to speak , I'd say his g-planes were roughly 10 ft above his roof and maybe 5 or 6 ft away ,along side the Pine tree. He ran it just like that for 20 years , he moved a few years back and I took the thing down for him , Surely a rusty delight , I cleaned it up a little around the most importent joints of the antenna and put the same old pipes and antenna right back up for him ,the match was there and he was back in business. I've seen pictures of your Dipole Lazy and I was very impressed to say the least with the install as well as your reports of how well it worked for you. Unless you have moved since those pictures ? I'd be failry sure you could make a Alpha V-5/8 work for you just fine if you really wanted to go that route. I would surely bet the farm that you would be very pleased with it's performance compared to your dipole's if that's even what you run anymore ? ....OK ...I see you run the A-99 now ........The A-v5/8's would cost you less then the Spec 1600 and would out perform it as well , if as you say space being a problem for you , you could still save money and do very well with the with the A-99's bigger brother in the 2000 ,still less then the Spec.