This will be my first rv purchase and it's driving me nuts. I have tried to make heads or tails of the towing issue. I have a 2002 Toyota Tacoma with towing cap. of 6,000lbs. The combined weight must not exceed 10,000lbs. GVWR for the truck is 5100lbs. and payload is 1330lbs. The unit I'm looking at is a trail-bay 27DS, length of 29'5" and dry weight of 4941lbs. Using this info this is the top limit of what i can handle. Using the 75% rule I saw somewhere sets me at 4500lbs. By that rule I'm 441lbs over. Is my logic correct or does anyone have any input on this that could be of help. The trail-bay has everything we want and so far has been the best quality for the price we have found. We have been looking for 6 months for the right one and are planning one last trip this weekend to see if we can find anything else. Thank you for your help.